you can learn how to play this stuff online... quite well actually. If that format works for you than use it. Taking years and years of lessons... well--that's not needed for every type of aspiring pianist... you are playing for your own enjoyment and that's what it's all about.
sometimes people ask if they can teach themselves to be concert pianists at 40 years old with no previous music training... to which I say... "sure, go ahead...why not."
If you honestly have questions that are answerable someone here is always willing to help.
Good Luck