I agree with Missy64. I started out by going to the forum and reading all of the posts that pertained to stores I shop at. Wait I still do that.....
Don't overwhelm yourself. It's okay to start out slow. Make sure your coupons are organized enough that you can find them. I hope you're past the envelope stage. I always get a chuckle when I see people with a little envelope. I have to carry practically a duffle bag for my binder.
It helps me to have an envelope for each store so that each week I can put my list and coupons in it that I plan to use. I keep that with me everytime I leave the house in case an unplanned trip comes up.
You will also need to learn your stores coupon policy. Some stores have a limit on the number of items you can buy with coupons or rewards you can receive. I recommend finding the coupon policy for any store you plan to shop at, printing it, reading it, and carrying it with you.