makeup questions

i wanna start getting into makeup but i have a couple questions especially as an acne prone girl.
foundation or concealer
out of those 2, which product is the best for acne prone skin?
blush
how do i find the best blush colour and which brands do u recommend/acne prone recs
contour and bronzer
idrk understand the 2 - which is more important - any recs?
which lipliners to get

hiiiiii
i LOVE makeup, it's good fun.
so for concealer/foundation, i use both! (foundation first, then concealer to touch up spots/redness/tiredness), but a cc cream with high coverage is also amazing.
for blush, cream blushes are really good imo. experiment on your hand, and what you think would work for you (maybe go lighter than you think you want... blush looks like a lot lol)
contour is better than bronzer. it blends easier imo and my skin is rlly light so bronzer doesn't work for me. actually, when i contour i use an eyebrow pencil cause it blends easier for me.
it's really all about experimentation, lol
i get all my stuff from essence, which is ok for my skin... i think elf is good for acne prone skin. most important thing is skin care- washing your makeup off gently, using scrubs, acne cream, etc. and moisturiser!
not sure abt lipliner. i have a nude one from w7 which does the job. but it's really your choice (BUT MAKE IT MATCH WITH THE LIPSTICK!!!! i've made that mistake before haha)
also for random products i 100000% reccomend essence waterprrof mascara (it's cheap aslo) and essence waterproof liquid liner (the two products match which is so cute)
and if you're new with makeup, i reccomend not going to heavy with it and just honing your technique first- wish i'd done that haha.
i hope you have fun with makeup, and remember that you're beautiful with and without it ^^

yeah i don't think i would ever go very heavy with my makeup but i do want to look like i'm not dying.
have u heard of the 'it cosmetics cc cream' and do u think thats good?
but omds thank you so much! it was very helpful