I know this may have gotten a lot of questions about it already, since I have read them all practically, but I do like to learn more about unity engine and making games therefore I though it would be great if I get some more amplified information about it.
First of all my experience so far:
1-I have made several coursera courses about the unity engine which I were able to made: 3d ball racing game, 2d platform game(basic without attacks) and other small projects.
2- Done several tutorials from the main website of unity .
Since now you may get an idea of my knowledge which is limited, I were wondering if you people could help me with few questions or well more or less getting “extended education” so i’m able to keep learning.
Main idea: My main idea or project is to make a replica of Mario smash bro’s, I know that I cannot do that for now so I will make a simply 1 vs 1, 2D/2.5D Fighting game, therefore I would like to get some guidance.
1- Any tools or assets that would be worth mentioning?
2- Some tutorials about making 2d games?
3- Extended programming courses or YouTube series or even books? (programming is my weakest point in game development :). )
4- Some other information worth mentioning?
Also do not worry about the design like drawing/sprites and such I have no problems with that so far :).
I’m really gratefully for the ones who will help me out to become a better developer 
, since I’m learning all by my self since sadly I couldn’t enter into the high education for game design because of few personal matters.
P.D: Creating games it’s a hobby so far, but i have a lot of time to learn so do not be awkward to give so much information as possible, since I will really appreciate it.