ZTM Blog Library

Welcome to our complete library of 100s of free in-depth guides, step-by-step tutorials, and more to help you learn in-demand skills, get hired, and advance your career.

P.S. Don't forget to subscribe to get the latest posts (and exclusive offers)!

Don't miss our free monthly newsletter to receive new posts, resources, exclusive offers and more 👇

Thanks for signing up. If you don't receive an email shortly, double check your spam box 🙂!

Join 300,000+ tech professionals. Unsubscribe anytime.

All Posts

Showing 326 results

June 11th, 2025 · 32 min read

How to Become a Prompt Engineer

Step-by-step guide to becoming a Prompt Engineer with no degree required. Learn the skills, build your portfolio and start applying. (Includes free resources!)

Scott Kerr

Machine Learning & AI

Beginner’s Guide to the JavaScript reduce() Function preview

June 9th, 2025 · 15 min read

Beginner’s Guide to the JavaScript reduce() Function

This one JavaScript method can total your cart, group your tasks, flatten your data, and build custom strings — if you know how to use it right!

Jacinto Wong

Web Development

Tutorials

June 6th, 2025 · 19 min read

How to Become an AI Developer

Everything you need to know about the role of an AI Developer and the exact steps you need to take to get hired as one ASAP.

Scott Kerr

Web Development

Machine Learning & AI

Tutorials

Is Technology a Good Career Path? Pros, Cons, and How to Get Started preview

June 4th, 2025 · 16 min read

Is Technology a Good Career Path? Pros, Cons, and How to Get Started

Curious about a career in tech? Learn the pros, cons, and how to go from zero to hired — no CS degree or coding background required!

Daniel Daines-Hutt

Machine Learning & AI

Career Advice

Beginner’s Guide to Standard Deviation in Excel preview

June 2nd, 2025 · 15 min read

Beginner’s Guide to Standard Deviation in Excel

Think your numbers make sense? Think again. This quick Excel tutorial reveals hidden patterns your averages are quietly hiding.

Travis Cuzick

Data Analytics

Tutorials

Beginner’s Guide to setTimeout in JavaScript preview

May 28th, 2025 · 11 min read

Beginner’s Guide to setTimeout in JavaScript

JavaScript not running in the order you expected? Master setTimeout with this fast, friendly guide and unlock async timing magic. (With code examples!)

Jacinto Wong

Web Development

Tutorials

Beginner’s Guide to Secure Web Gateways (SWG) preview

May 26th, 2025 · 17 min read

Beginner’s Guide to Secure Web Gateways (SWG)

Stop threats before they reach the browser. Learn how secure web gateways work, why they matter, and how to get started with your own SWG today.

Aleksa Tamburkovski

Cyber Security

Beginner’s Guide to React Query (Now Tanstack Query) preview

May 23rd, 2025 · 11 min read

Beginner’s Guide to React Query (Now Tanstack Query)

Still wrangling useEffect and useState for every API call? Learn how React Query makes data fetching in React easy, smart, and automatic - with code examples!