I want to teach myself C, C++ and java, which can be said to be zero-based, but I have a strong interest! Ask for a good book (introduction) and a reference for learning skills.

Nowadays, there are many programmers in the society, so it is difficult to recognize the graduation certificate of self-taught examination. Individuals do not support self-study exams.

As for self-study, it is unrealistic for me to read books by myself. I should write more and communicate more with people. First of all, there is no need to learn both c++ and java. Just learn one. C can serve as an introduction to programming. First, try to write a program, get familiar with the environment, and sometimes you need to change your way of thinking a little. You can read Tan Haoqiang's book, but only at the beginning, so don't read it in the future, he will kill you. At present, java and c++ are the mainstream, so I suggest you study one of them seriously. Python doesn't know much about it. I only used it to write a few scripts without making comments, but my friends and colleagues around me don't use it much.

If you just want to be an excellent code farmer, you can sign up for a training class first, and then have time to study the usage and mechanism of these languages more; If you really want to improve your level, you should read more computer-related books. Operating system, compilation principle, database, software engineering, etc. Can be found online. You can browse more forums (I don't have time to browse now), program more, practice more, don't be afraid of bugs, just tune write slowly more.

Ps: I'm a novice, too, but after writing the program for two years, I can understand how long Daniel's road is. It also says something on the side of the road. I don't want to give points. I hope I can help you.