Welcome to the site. Points can be earned by posting, refering and other varoius things around the site, they can be used in the points auction area to buy cards (you can also sell cards for points) or you can use the points to buy upgrades for your profile through the shop link.
Hiya William! Welcome to the site. Glad to have you on board!! If you have any questions, or need help with anything please don't hesitate to give me, or one of the other staff members a shout. I'm sure we'd love to see your collection, so please post a link!