Hi Damien,
Welcome to the boards..
A great recommendation for the meat and potatoes of the car sales biz is a book titled The Sales Advocate.
There's good bucks to be made in the business. A good salesman, at the right dealership can easily make 6 figures.
I don't think you need me to tell you that being at a slow dealership is a rough gig. Move on without hesitation if you have to.
I worked on the road in cars sales doing super/slasher sales which are 4-5 day, aggressively advertised sales events. We cleared out dealership's used car inventories; putting up 125k+ in front end gross in 4 days which is more than they'd typically do in a month.
I was making 4-6 grand per week and working on avg. 12 days per month. The down side was I was living out of hotels but I was single, saw the country and had a blast.
If you plan on staying with the car business, pound out the sales (used cars is where the money is at) all you can for a year, learn everything you can and get into F&I... that's where the real wood is made.
Good luck... read all these threads and ask a lot of questions. There's a few really knowledgeable guys around here.