Best/cheapest/safest credit card to get for a first card in Ontario?

Hey there, i just turned 18 and i want to build a credit rating. first off i am good with not spending money i don’t have, so don’t lecture me on how there evil. i will just use it for somthing small once a month to build a credit rating. what is my best bet?
Also is it better to go with airmiles or cashback?

American Blue Express Credit Card: Apart from no annual fee feature of the American Blue Express it also gives cash returns on specific purchases. Users of the American Blue Express also enjoy protection against fraud for online credit card transactions. This card tries to right the various wrong notions about the American Express credit cards, one of which is that it is a credit card only for rich or those who have money to keep a credit card.