The best free AI courses and certificates for upskilling in 2026 - and I've tried them all

I've worked with AI for decades and have a master's degree in education. Here are the top free AI courses online that I recommend - and why.
GitHub

Kling AI Referral Code: Get 50% Free Extra Credits

Use Kling AI referral code 7BPNSXVCR8FL for 50% extra credits when purchasing a plan. The Kling AI referral code 7BPNSXVCR8FL is the key to unlocking 50% bonus credits on your subscription. Applying ...
GitHub

Keycloak Registration with Invitation Code

This SPI (Service Provider Interface) implementation for Keycloak enables user registration using a predefined invitation code. It introduces an additional level of registration control by allowing ...

‘A new era of software development’: Claude Code has Seattle engineers buzzing as AI coding hits new phase

More than 150 techies packed the house at a Claude Code meetup event in Seattle on Thursday evening, eager to trade use cases ...
CSO Online

Output from vibe coding tools prone to critical security flaws, study finds

The assessment, which it conducted in December 2025, compared five of the best-known vibe coding tools — Claude Code, OpenAI ...
Security Boulevard

Can You Afford the Total Cost of Free Java?

Before running Java on a free JVM, assess the likelihood of a vulnerability being exploited and the consequences of an ...
InfoQ

Java Concurrency from the Trenches: Lessons Learned in the Wild

Hugo Marques explains how to navigate Java concurrency at scale, moving beyond simple frameworks to solve high-throughput IO ...