Developer Essentialsfor $0.
4 Free Developer Essentials Courses, Adaptive From the First Question
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HTTP REST API
The course teaches HTTP protocol fundamentals and REST API conventions, covering HTTP methods, status codes, headers, authentication patterns, JSON request and response bodies, redirects, cookies, pagination, rate limiting, and file operations, with hands-on curl and jq exercises building toward a complete API client script.
Markdown Documentation
The course teaches CommonMark and GitHub Flavored Markdown syntax and patterns for writing professional technical documentation, including headings, emphasis, lists, links, images, code fences, tables, blockquotes, task lists, footnotes, YAML frontmatter, and escaping, culminating in building polished READMEs, changelogs, and multi-file documentation sites.
YAML JSON Configuration
The course teaches practical JSON and YAML skills for developers, covering data types, nested structures, jq and yq querying, JSON Schema validation, YAML anchors and merge keys, format conversion, and environment-aware configuration management patterns for real-world software projects.
Why AccelaStudy® AI Free
40-60% Less Study Time
Skip what you already know. Target only the gaps.
Cross-Domain Transfer
What you learn in one course carries into related ones.
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Adaptive learning that skips what you know and targets what you don’t. One account unlocks all 150 free courses.