credit card question

credit card question

I am considering getting a credit card. I've only ever used my bank card, but would like to start establishing some credit. I'm 24, about to start grad school, I don't make a ton of money but am not living paycheck to paycheck. I would be using it primarily to establish credit for myself. I don't plan on going hog wild with it and feel like I'm old enough/responsible enough to not let it get out of hand. So, my question is, based on what I want it for, does anybody have any recs on what kind to get? Any promotions? What to steer clear of? Like I said, I don't plan on using it all that often but I feel like I need to start establishing credit. Thanks in advance!
So this is my room

So this is my room

the plum tree in front of my porch

the plum tree in front of my porch

Help! stunned baby blackbird

Help! stunned baby blackbird

Echinacea – bug

Echinacea – bug

Korean (?) peppers

Korean (?) peppers

Plant ID please???

Plant ID please???