Trading is not the hard part. keeping track of everything for tax purposes is. Many exchanges help with this by keeping records. If you want to try bitcoin then start by forgetting about investing. Start with some profitable spending.
Set up an account at an exchange in your country. Make sure they have a business license!!!!
Fund the account with a transfer from a bank account or mail them a check, etc. You will have to provide all the same information as when you set up a bank account.
Buy some bitcoin. Once you have it you could trade it back and forth for fiat but why? You will do better to spend it as bitcoin. You avoid trade fees and many retailers offer a discount for using BTC. Just go to Overstock.com or something and buy an item you were going to buy anyway.
There is legislation pending in the U.S. that would exempt purchases under $600 from capitol gains tax. If that goes through spending will be the new selling.