I started using Ultra Engine on 2023-01-18. Learning to use the engine has been really easy.
The documentation is very clear and I can search for keywords I want to learn about. Each command has a fully working example, so I can quickly copy-paste and try the code.
The installer is also amazingly fast and automatic, and updating to the latest engine is just a click away. Updating my projects to use the latest version is also fully automatic by clicking on the yellow sign.