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

A python program that can automatically download pictures and videos on rule34.xxx in batches.

ruleTXT.py： When you browse rule34 and find some great videos, you can save the addresses of these videos to a txt file, and the ruleTXT program will automatically download them. rule34.py: After ...

This free tool gives you one easy way to install apps on Linux and Mac - here's how

Homebrew is a free, open-source package manager for Linux and MacOS that simplifies the installation and management of software. Think of Homebrew as a command-line version of the App Store that ...
GitHub

python binding for using s5cmd to download and upload files to s3 efficiently

The S5CmdRunner class provides a Python interface for interacting with s5cmd, a command-line tool designed for efficient data transfer to and from Amazon S3. For more information about s5cmd, please ...
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Nadam optimizer explained: Python tutorial for beginners & pros

Learn how to implement the Nadam optimizer from scratch in Python. This tutorial walks you through the math behind Nadam, explains how it builds on Adam with Nesterov momentum, and shows you how to ...