Master Coding Skills &
System Design.

Master Python re module — search, match, findall, sub, compile, named groups, lookahead/lookbehind, and a validation pattern library.

Essential Linux commands for developers — file navigation, grep and awk for log analysis, process management, permissions, SSH, and debugging slow servers.

Complete system design reference — key numbers to memorize, SQL vs NoSQL guide, the 6-step interview framework, and company-wise topic list.

Complete Python file I/O guide — pathlib, open modes, JSON load/dump, CSV reader/writer, memory-efficient large file processing.

Learn Docker from scratch — writing Dockerfiles, docker-compose for multi-service apps, volumes, networking, and essential commands.

10 real Python interview questions from Google, Amazon, Flipkart — GIL, decorators, generators, asyncio, shallow vs deep copy, and coding challenges.

Master Python virtual environments — venv creation, activation, pip install, requirements.txt, and modern Poetry workflow for dependency management.

Complete PHP PDO guide — connecting to databases, prepared statements, named parameters, transactions with rollback, and lastInsertId.

Master Git — daily workflow, branching strategies, merge vs rebase, stash, cherry-pick, undoing commits safely, and Git Flow for teams.