50 minutes ago, JoeJ said:

This is also similar, but it seems to assume some basic knowledge already. So an online programming course including online compiler to enter and execute code would be better. Maybe this one: https://www.codecademy.com/learn/learn-c-plus-plus (not sure if it allows to code).

I like this resource. I refresh my knowledge of CSS/HTML here: https://www.codecademy.com/learn/learn-css I use CSS/HTML for GUI of my simple games. Goal of CodeWars just to give you a lot of problems or tasks for everyday practice. I like CodeWars because I can write code and unit tests in browser. CodeWars has two different fields: for code and for unit tests. I study Test-Driven Development (TDD) and Behaviour-Driven Development (BDD). CodeWars helps me in practice using TDD. I think you can use it from mobile devices. I have old Nokia and I cannot check it. If you use C++ and do you want to know about TDD I advice you this book: Modern C++ Programming with Test-Driven Development: Code Better, Sleep Better

The best tools for C++:

• Google Test Framework (GTest)
• Google Mock Framework (GMock - it works with GTest)
• CppUTest and CppUMock

P.S. Everyone can dislike it. You only inspire me with it.

4 hours ago, VoxycDev said:

Android or iPhone? If Android, you can use AIDE to code on your phone. It has built in tutorials to make games with GDX to get you started. When you progress, you can also use C++ in it via NDK/JNI and then your code becomes portable. This is what I do currently. I use C++ and switch between coding on my Android tablet and desktop/laptop, moving code around as necessary.

I do use Android; thank you for the advice!