Procject : Dictionary for novice programmers

Hi coders,
I’d like to learn more about the main topics a programmer should know
I would like to do it for my personal project,that is, to create a sort of dictionary for novice programmers like me.
Would you like to help me?
-No need for explanation just the concept (For example : recursion )
-Any concept that can range from functional programming to object-oriented programming
Regards,
CamiCode