Maybe I should spend some time reading code-golf programs, just looking at other people's projects in general, since I don't wanna get stuck being overly reliant on reusing my old techniques. While there are programming books however I'm more interested in the code itself rather than talking about the concepts behind them at great lengths, and experimenting by adding your own changes is better IMO, I also don't like paying for books as they would often just sit there on my shelf unused piling dust. They say you'd learn more by writing than reading source codes though, but it seems like I plateaued enough to be missing out.