The first thing you need to do is to figure out what you are trying to achieve. Trading encompasses infinite possibilities, and the answer to your question about where to start is impossible to answer unless you describe what your goals are.

There is an element of "gambling" in trading, but it is NOT the same thing as gambling, unless you don't have a clue as to what you are doing, and just picking stocks based on guesses.

Penny stocks - great idea, that's like spending your money on a jalopy instead of a working car.