I do not know much, actually. I just made a single game nobody wants to play. Still, not shocking for the first "serious" game of mine ever.
Where to begin with? Well, depends on what you want to do. There are basically two ways of making a game: use engines/GameMaker etc. (last ones are actually very simple engines) or program stuff. While programming stuff, you have far greater control on what you can do, but you must do that controlled stuff from the scratch, which takes time to do, to understand and to debug. You may also program stuff with some "partial" engines (i.e. integrate a normal physics engine and do the rest in C++), but to do that, you need to already know programming quite a little, and you basically lose total control in parts you didn't do yourself. This is simplified, but well, I think I'm understandable for once. I think you would prefer engine-based development, so I can't give you any tips, as this did not interest me too much.
