of a short series of focused article/tutorial posts going from zero to WebAssembly-based web apps, running entirely inside the web browser and allowing you to learn about all these topics as you go: GitHub, its Codespaces, WebAssembly (or “WASM”), C code, online Visual Studio Code, port forwarding, HTML, and JavaScript. I hope you will have as much fun as I had while preparing this, and that you will learn a lot and get your curiosity sparked up! Some say the more you learn, the more you feel you know nothing and there’s more to learn. That was exactly my feeling here, a feeling that is actually good. Let’s go! As a long-time strong advocate for client-side web apps, I’ve always thought it was weird that I knew basically nothing about WebAssembly. But that started changing recently when I found motivation while trying to build my new web platform for in-browser analysis of molecular structures and simulations ( preprint of its first version here , if you want to know more about it).…