Does anyone have any affordable skin care products/routines/tips?

I've always had a really young face, i get told that i look young for my age all the time. I've even been mistaken for a 12 year old girl multiple times LOL. But i'm about to turn 25, and I want to start taking better care of my face so that I can keep my skin looking young as long as possible, as well as allow my face to age gracefully as I get older.

Thanks ladies!