I can see in your case where you are really just beginning so nearly anyone you talk to is going to have a approximately correct answer to your question but onc

I can see in your case where you are really just beginning so nearly anyone you talk to is going to have a approximately correct answer to your question but once you reach a certain point where you know the basics I'd argue that it will be much harder to answer your questions by simply asking those around you. You are also perhaps not asking Google the right questions. because I just did a search for "optimize MySQL Database" and the first heading of the first result that popped up was titled "normalize" so I stand by my claim that I prefer searching over asking by default.