Find a local paint store. If you don't want to spend the bucks for an PPG, DuPont or R-M, then ask if they have a second line. Also TCP Global (TCP Global - Quality & Service Since 1974) will sell you mail order paints from cheap to big bucks. Also about everything else for painting including DIY books

If you need cheap tools, Harbor Freight's are the same as many Eastwood tools but often painted a different color or repackaged. The HF is usually much cheaper.