For future reference, you can just use "autodidact."
Next time if you want to brag without looking like an ass, describe something really impressive you did in detail to illustrate a point using highly understated language. Not only will you not get penalized for bragging, people will give you bonus points for being humble.
Next time if you want to brag without looking like an ass, describe something really impressive you did in detail to illustrate a point using highly understated language. Not only will you not get penalized for bragging, people will give you bonus points for being humble.