Catalog · Nexora

Python advanced

Rust for Python Engineers

Learn Rust from a Python mental model, then use it where Python hurts. Ownership and borrowing explained against garbage collection, error handling without exceptions, and shipping a PyO3 extension that speeds up a real hot path in your codebase.

TN Tomas Nowak 4.8

$99.00

16 hours

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JavaScript

JavaScript intermediate

JavaScript Deep Dive: The Event Loop and Beyond

Why your await resolved in that order. Microtasks and macrotasks, closure and scope semantics, prototype chains, memory leaks in long-lived pages, and profiling with the performance panel. The mental model that makes async JavaScript predictable.

LM Lucas Meyer 4.6

$55.00

11 hours

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Web Development

Web Development intermediate

Frontend Performance: Core Web Vitals in Practice

Diagnose and fix what users actually feel: layout shift, input delay, and the largest paint. Critical-path CSS, code splitting, image strategy, font loading, caching headers, and measuring with real-user monitoring rather than a lab score on your own laptop.

AB Aisha Bello 4.5

$59.00

9 hours

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