What should my next card be?

For reference I just turned 20 yesterday. I have no bills other than my car payment and my auto insurance. I currently bank using my debit card using a local bank. My one and only card is the Capital One Quicksilver card that I opened in February (7 months ago) My top spending category is entertainment. Any cards right now that have good sign o bonus that can help launch my traveling adventures? I do have a trip planned in March that I can put on the new card. I have been trying to watch some YouTube videos on some cards out there but wanted to see what everyone thought.