I cannot rave about Elf products enough. By far the cheapest makeup, but it's seriously all high quality, gorgeous, and long-lasting. These are some of their most popular products. My fave out of the bunch is the eyebrow kit.
Tightlining - probably the best way to put eyeliner on to add great definition to your lashes. Basically, you put eye liner (gel or pencil) in between each lash in your lash line (makeup, diy, beauty tips)