In only one sense do I agree with @HungryGuy: if you aren’t very well schooled, very dedicated to doing the research and very meticulous about record keeping and very good at learning from your mistakes (which will be numerous and expensive), then “day trading” is little more than gambling. “Investing” I wouldn’t classify at all like gambling (again, if you research the companies and know the industries that you’re investing in), but “trading” without a lot of knowledge and discipline is little more than gambling.
I agree completely with @worriedguy that filing your taxes is not much of a problem at all, and in fact it’s very simple if you use electronic filing (I’ve been using Turbo Tax since the late 1980s, and I’m sure others are equally good). If you keep records of your buy and sell dates and prices (and stock splits that happen between those events, if any), then the filing issues are minimal.
Almost anyone who offers on-line accounts is also set up to handle small traders / investors. But I would stick to “investing” rather than “trading”.