Im no professional, nor am I a coin dealer, but I've been collecting for 2 years now and I am up to about 600 unique pieces, including my personal favourite, the Royal Canadian Mint's $5 1 oz 9999 silver clad in gold coin commemorating both the 2010 olympics and the Men's hockey triumph.
Step 1: Items you need
2x2 paper coin slots
5x4 plastic sheets to hold 2x2 coin slots
Time, and lots of it