Hey, I'm Mike Guoynes.

I enjoy hand-crafting interactive courses that help you level up as a frontend engineer.

Did you know that our brains process visuals 15x faster than text?

An interactive, visual guide to mastering debounce and throttle. Explore timelines, see the difference, and build intuition.

Understand the difference between Observables, Subjects, and BehaviorSubjects with simple explanations.

Learn how to use debounceTime, distinctUntilChanged, and switchMap to build a real-world autosave feature.

A quick guide on testing service calls from an Angular component.

Learn how to build a semi-optimized React-like framework and create your own virtual DOM implementation.