13 years is already self-sufficient adult man. No need to search for this age a special "children's rates". Any available online videos, documentation and examples will do.
The only thing if not studied English intensively, you need to look Russian.
If conventional courses don't go, and you want to find "kids" to be interested is wrong. This means that the child in principle, the programming is not at all interested in how the process as a result. Courses will not help here.