Learning & Roadmaps — Useful Sites

BTK Akademi

2026-10-18T00:00:00Z

The Turkish ICT Authority’s free online learning platform: programming, cyber security, AI and networking courses, with a certificate on completion. Unlike paid Turkish course marketplaces it is state-run and free; taking a course needs an account.

https://www.btkakademi.gov.tr/

Coderspace

2026-10-18T00:00:00Z

A career platform for developers in Turkey: company-sponsored bootcamps and hackathons, plus public interview questions, salary data, roadmaps and a developer glossary. Unlike Techcareer it sells an interactive Python and data course platform (Pro) and publishes salary figures.

https://coderspace.io/

How DNS Works

2026-10-18T00:00:00Z

A colourful comic that shows how a DNS query is resolved through resolvers, root and TLD servers. Unlike reference books it makes the process concrete with characters and a short story.

https://howdns.works/

How HTTPS Works

2026-10-18T00:00:00Z

A one-page comic that explains HTTPS, certificates and key exchange. Unlike technical specs it conveys the core idea in a few minutes without requiring any cryptography background.

https://howhttps.works/

HTTP/2 Explained

2026-10-18T00:00:00Z

A short book by curl's author Daniel Stenberg explaining the HTTP/2 protocol, including headers, streams and server push. More readable than the specification and written from an implementer's view; translated editions exist.

https://github.com/bagder/http2-explained

Let's Build a Simple Database

2026-10-18T00:00:00Z

A step-by-step tutorial that builds a SQLite-like database from scratch in C: REPL, B-tree, pager, cursors. Unlike conceptual database explainers, it shows the storage engine internals through working code.

https://cstack.github.io/db_tutorial/

Linux Guide and Hints

2026-10-18T00:00:00Z

A community guide to server setup, networking, security and service configuration on the Rocky/RHEL family, step by step. Unlike distro manuals it centres on real deployment scenarios and experienced advice.

https://linuxguideandhints.com/

Marko Knoebl: Programming Course Slides

2026-10-18T00:00:00Z

Course slides built from Markdown for React, Vue, Python, data science, HTML/CSS, JavaScript/TypeScript and databases, with exercises and solutions. Unlike video courses these are standalone HTML slides you can download and read offline; CC BY-SA 4.0.

https://marko-knoebl.github.io/slides/

SHA-256 Algorithm Visualised

2026-10-18T00:00:00Z

A browser visualisation that animates how SHA-256 turns an input into a hash, showing the bits in memory and each round. Unlike written explanations, you can type your own input and watch every step.

https://sha256algorithm.com/

Techcareer.net

2026-10-18T00:00:00Z

A Turkish career platform with company-sponsored bootcamps, job listings and public resources (technical glossary, interview questions, CV samples, university base scores). Unlike Coderspace it has shifted its weight to AI-skills training; the resource pages read without an account.

https://www.techcareer.net/

The Illustrated TLS 1.2 Connection

2026-10-18T00:00:00Z

A page that walks through every byte of a TLS 1.2 handshake with colour-coded, annotated and hand-computed values. Unlike most TLS explainers it shows the actual packet contents step by step instead of an abstract diagram.

https://tls12.xargs.org/

Web Skills

2026-10-18T00:00:00Z

Lays out the skills to learn as a web developer (HTML, CSS, JS, tooling, testing, performance) as a visual map, with each box linking to a good tutorial. Unlike text-heavy roadmaps it shows the whole field at a glance.

https://andreasbm.github.io/web-skills/

What happens when...

2026-10-18T00:00:00Z

A detailed step-by-step account of everything that happens when you type an address in a browser and press Enter (DNS, TCP, TLS, HTTP, rendering). It goes deeper than typical 'how the web works' pieces, to the level an interview question wants.

https://github.com/alex/what-happens-when

ÖSYM

2026-10-18T00:00:00Z

The body that runs Turkey’s central exams (YKS, KPSS, ALES, YDS); its public pages carry the exam calendar, guides, published question booklets and result statistics. Unlike prep sites it is the official source for dates and rules; applying happens in a separate, authenticated system.

https://www.osym.gov.tr/

arxiv-sanity-lite

2026-09-18T00:00:00Z

Karpathy's tool for searching, tagging and recommending arXiv papers; open source.

https://arxiv-sanity-lite.com

Awesome Certificates

2026-09-18T00:00:00Z

A list of free computer-science certificates you can add to your résumé. Unlike paid certificate programmes, it picks only free ones.

https://github.com/PanXProject/awesome-certificates

Awesome Hackathon

2026-09-18T00:00:00Z

A resource list for running fun and productive hackathons. Unlike participant guides, it focuses on the organiser’s side: planning, judging, tools and platforms.

https://github.com/dribdat/awesome-hackathon

Awesome Product Management

2026-09-18T00:00:00Z

A resource list for becoming a better product manager. Unlike general career lists, it gathers books, frameworks and tools specific to product management.

https://github.com/dend/awesome-product-management

Awesome Roadmaps

2026-09-18T00:00:00Z

A list gathering clear roadmaps to improve your knowledge across fields.

https://github.com/liuchong/awesome-roadmaps

Awesome STEAM

2026-09-18T00:00:00Z

Supplementary learning resources for science, technology, engineering, arts and maths. Unlike general learning lists, it uses the STEAM frame that includes the arts and focuses on school-level extras.

https://github.com/RahulBirCodes/awesome-steam

Awesome Workshopper

2026-09-18T00:00:00Z

A list of interactive command-line tutorials (workshoppers). Unlike browser-based tutorials, you solve exercises in the terminal with your own editor — the format NodeSchool uses.

https://github.com/therebelrobot/awesome-workshopper

Awesome YouTubers

2026-09-18T00:00:00Z

A list of quality YouTube channels that teach technology. Unlike a YouTube search, it hand-picks channels by topic.

https://github.com/JoseDeFreitas/awesome-youtubers

CSS Diner

2026-09-18T00:00:00Z

A game teaching CSS selectors by picking dishes on a table. Unlike dry drills it turns selector syntax into a visual, fun puzzle.

https://flukeout.github.io/

Distill

2026-09-18T00:00:00Z

A research journal explaining machine-learning ideas through interactive visuals. Unlike classic paper journals it explains interactively; publication is on hiatus, but the archive remains valuable.

https://distill.pub

Duolingo

2026-09-18T00:00:00Z

A platform teaching languages through gamified, short daily lessons. Unlike course-based learning it builds a habit through daily streaks; in exchange, speaking practice is limited.

https://www.duolingo.com

Flexbox Defense

2026-09-18T00:00:00Z

A site teaching CSS Flexbox through a tower-defence game. Unlike the docs it fixes each alignment property with a game move.

http://www.flexboxdefense.com/

Full Stack Open

2026-09-18T00:00:00Z

The University of Helsinki’s free, end-to-end full-stack course teaching React, Node and GraphQL. Unlike Udemy-style courses, assignments are assessed and it can award university credit (ECTS).

https://fullstackopen.com

Learn to Code With Me

2026-09-18T00:00:00Z

A resource gathering paths, tools and career advice for self-taught coders. Unlike single-topic sites it addresses “where to start and how to turn it into a job”.

https://learntocodewith.me/

Silent Teacher

2026-09-18T00:00:00Z

A game that teaches the basics of programming by trial and error, with no word of explanation. Unlike a lecture it has you discover the rule yourself.

https://silentteacher.toxicode.fr/

SoloLearn

2026-09-18T00:00:00Z

A platform teaching programming on mobile through small lessons and community. Unlike long courses it is bite-sized enough to progress even on the bus.

https://www.sololearn.com/

TechGuide

2026-09-18T00:00:00Z

A site giving software’s different career paths (frontend, data, mobile) as visual roadmaps. Unlike a single resource it maps what to learn in which order for a role.

https://techguide.sh/

01 Edu Public

2026-09-10T20:53:20Z

The open course-and-project repository of the 01 Edu school, built on a teacherless, peer-reviewed model. Unlike video courses it is project-based: with deliberately ambiguous tasks it teaches you to build your own solution.

https://github.com/01-edu/public

APMG International

2026-08-26T20:53:20Z

An accreditation body running examinations for the AXELOS frameworks and others. Unlike the framework owners it is an independent examination institute — the same ITIL exam is available through several, and APMG is one of them.

https://apmg-international.com/

AXELOS

2026-08-26T20:53:20Z

The owner of the ITIL, PRINCE2 and MSP frameworks. Unlike the security bodies it sits on the service and project management side — ITIL is the shared vocabulary of corporate IT, and security teams use the same terms for incident handling.

https://www.axelos.com/

BCS

2026-08-26T20:53:20Z

The UK’s chartered professional body for IT, which certifies and also accredits university programmes. Unlike commercial examination institutes it is a professional institution, and a step on the path to chartered engineer status.

https://www.bcs.org/

CertNexus

2026-08-26T20:53:20Z

A body issuing vendor-neutral certificates in emerging fields: cybersecurity, data science, AI and IoT. Its difference from the established organisations is that focus — a yardstick in areas the traditional catalogues have not caught up with.

https://certnexus.com/

CompTIA

2026-08-26T20:53:20Z

A common entry rung through Security+, Network+ and A+. Unlike senior certifications it demands no prior experience, which is why it appears in first-job listings and in the US defence sector’s DoD 8570 list. Do not expect depth.

https://www.comptia.org/

EXIN

2026-08-26T20:53:20Z

A Dutch vendor-neutral examination institute certifying in information security management (ISO 27001) and data protection. Unlike training providers it only examines: where you learned the material is not its concern.

https://www.exin.com/

GAQM

2026-08-26T20:53:20Z

A body issuing vendor-neutral certificates across a wide field — project management, quality, security. Against the established organisations it is cheap with flexible entry requirements; in exchange, employer recognition is limited.

https://www.gaqm.org/

PECB

2026-08-26T20:53:20Z

A body certifying auditors and implementers against ISO standards including 27001, 22301 and 9001. Against EXIN it operates through an accredited trainer network and confers lead auditor status.

https://pecb.com/