Trying to understand makeup

Hi okay so I’m currently 18 and I want to learn how to do makeup. I’ve watch some videos. I’m only truly worried about blending eyeshadow and doing the whole contour thing.

I have foundations and eyelash thing and the little sponge thing I’m planning on buying some brushes 28 pieces

I’m trying to find at least two good eyeshadow palette, brushes, concealer, the little wing thing

Does anyone know some good deals or good brands for low prices?