[Question] Working on an idea for a game, where i have some licensing questions.

So the question is kinda simple: Which license should i use to:

– Allow others to read and learn from the Code on Github. I want to help others learn to develop.
– Disallow copying the whole repository, and redistributing/earning money from my work.

I would like to sell the game (eventually) on steam for a few euros, but don't want others to strait up steal all my work, without me being able to do anything about it.

I like to use the GitHub Wiki and Discussion pages, to describe and discuss my work. The Discussion page only makes sense in a puplic repository, which it is currently. Wiki also makes most sense for what i use it for, in a puplic repository. I also like to make use of the Issues page to track issues, which can be useful in both private and public repositories.

I have currently selected the "GNU GENERAL PUBLIC LICENSE", but i am not sure, if it is 100% the correct one to use.

I am pretty new in the business part of software development, as i only graduated last year, from my Bachelor in Software development.

Feel free to ask if there is any other detail i should supply.