You may, for example, find a card offering $200 cash back for spending $1,500 within three months of opening your account. If you normally charge $700 worth of essential expenses, like gas and groceries, on your credit cards each month, that should be a fairly easy spending requirement to meet.
Just be careful not to go after sign-up bonuses that require you to spend more than what you normally would. If you see an offer for $200 cash back for spending $3,000 within three months of opening your account, and you’d normally only spend $2,100 during that time, it’s not worth it to spend an extra $900 just to get $200 back.
