Power Script Helper(hereinafter referred to as the program) is a powerful tool for learning scripting GTA - San Andreas. It contains more than 80 lessons, divided into sections. There are lessons for both Cleo and main.scm here. The program is designed primarily for beginners. But it will also be useful for experienced scripters to read them - I think you will find everything you need to help you create your own mod and implement all your ideas.
The program has a lot of pictures that confirm the correctness of the code, as well as examples of scripts that you can use in your mods. In addition, the program has a built-in small database from which you can take the necessary information.
The program has a user-friendly interface with optimal navigation, which compensates for grammatical and syntactical errors in the author's text of the lessons. I don't think it should be difficult to use.