Master Coding Skills &
System Design.

Learn PostgreSQL-specific types — arrays, hstore, JSONB, UUID, and range types.

Understand vertical scaling (bigger machines) vs horizontal scaling (more machines) and when to use each.

Master SQL SELECT -- columns, WHERE filters, IN, BETWEEN, ORDER BY, LIMIT, and column aliases.

Learn DI, interfaces, and how Laravel service container works.

Learn Git branches — create, switch, merge, delete, and rebase.

Master PHP conditional statements — if, else, elseif, and switch with practical examples.

Learn what jQuery is, why it was created, how to include it in a page, and where it still makes sense in 2026.

Learn Linux basics — terminal, filesystem, and essential commands.

Learn MySQL server architecture — connection layer, query optimizer, InnoDB storage engine.