Shopping is great but getting cash back is even better!
One of the easiest ways to earn cashback. I've earned up to 18% on a purchase! Use this link and you immediately receive $40!
Rakuten
A great site for cash back. You can use it online and even has in-store offers that are easy to redeem. Sometimes it gives you more cash back than Rakuten so definitely check around and download the extensions when shopping online.
RetailMeNot: Save with Coupons, Promo Codes & Cash Back
Another great extension although I find it doesn't give as much cash back as Rakuten, Honey, and Retail Me Not but still not bad to have as it features some stores that the others don't.
CouponCabin: Coupons, Promo Codes & Cash Back
Another great one! It even tells you when there's a better price at a different store.