Op, keep it very simple and use products without too much stuff or fragrance as your skin is probably sensitive.
Go to Superdrug and buy one pot of day cream - suggest Simple brand something like vital vitamin cream. Its fine to use it at night as well.
Buy a bottle of make up remover/cleansing lotion... OR some Simple brand make up wipes.
BB cream is beauty blemish balm.
CC cream is colour correcting cream.
You don't need both.
Suggest a basic range BB cream, a lightweight concealer (liquid in a stick) for under eye shadows, a light cream blush, plus a fixing spray (I like Revolution Glow Fix).
Wash your face in the morning and use a small 5 p piece size blob of the day cream. Let is sink in for 10 mins or so.
Use a small amount of BB cream and stroke it over your face, dab a couple of small dabs of concealer in the inner corners of your eye and just under. Blend gently with the pad of your finger.
Pad your finger on the cream blush and gently pat on the apple of your cheek, just a tiny amount, pad the rest over your lips.
Spray the fixer spray lightly just a couple of sprays and waft dry.
Add mascara and lip gloss if you want.
If you go to a make up counter bear in mind they are there to SELL you loads of products. Less is more!