Selling my craft

So i've been thinking about selling the items I make, but I'm completely lost at how I go about it. It's like this brand new world that I have no idea about! I don't know if to just make a few things and sell them through people, or make loads and then try and get a stall somewhere!!?? Ahhhh its so scary! After my amazingly long summer I have one year of uni left, and now all I can think about is I need to start saving, I mean how am I ever going to keep funding my trips to Paris once I've left uni and entered the real world? 
Natasha xox