Help making my first Home-made arduboy

So basically i am a CS major with almost having no knowledge about electrical circuitry.

I’ve decided to make my own arduboy since the official one almost costs $100 if i get it shipped to my country
I would appreciate if someone could guide me through the process.

I want a flash cart to be incorporated into my build and it shouldn’t be on a breadboard since my plan is to carry this bad boy around.
My budget is around $60.

i probably posted this in the wrong section didn’t i

Hey good news, for your budget you should be able to make more than one! If you haven’t seen this guide yet, it is the default to-go place for information on making your own Arduboy clone:

There are a few instructables:

Here is a youtube video too:

This should be a wealth of knowledge to get started, good luck!