The fact that you are willing to help out is an awesome start. There is no 'best' way to help out here, in my opinion. Different people have the different things that they do. I, for example, prefer to help out as a Listener as I find I'm more helpful in that arena as opposed to answering questions in the QnA. Other people prefer to just answer questions here. Some spend more of their time on the forums/groups helping out there. Others just correspond via PM. The possibilities are pretty much endless. If you want to work out which way works best for you, experiment with these things. You might find that you enjoy one thing more than the other. A bit of advice, if you're going to become a frequent Listener. Make sure you look after yourself and prepare yourself for every Venter. Sometimes what they have to say can be incredibly mentally draining. Good luck and welcome.