How to increase your credit score. 

Sign up to each to receive a signup bonus after following the directions corresponding to the specific card.
American Express Everyday Card:
refer.amex.us/DANYC4PWv?XLINK=...
Each friend can earn: 15,000 Membership Rewards® points after they use their new Card to make $1,000 in purchases within the first 3 months of Card Membership.
Discover Cashback Bonus Card:
refer.discover.com/s/b4szb
Become a Discover Cardmember and get a $50 Cashback Bonus or 5,000 Miles when you make your first purchase within three months. Then, earn rewards with every purchase after that.
American Express Blue Cash Everyday Card:
refer.amex.us/DANYCqEtg?XLINK=...
Each friend can earn: $100 back after they spend $1,000 in purchases on their new Card in their first 3 months of Card Membership. They will receive $100 back in the form of a statement credit.