When I started out I did research into how to look after your skin and the basics of make up application, you can find a ton of info on all products online along with videos on the likes of youtube on how to apply.
Start with basics you don't have to use a toner and a primer to begin with but I use primer, concealer, foundation, mascara & eyeliner, occasionally I'd use blush and rarely eyeshadow. Use a good cleanser and moisturise your skin too.
Look into how to apply each and practice.
@[email protected] has previously posted a little guide on makeup here that has info on the order or products which is handy (again you can drop a few products to simplify the process or if you don't use them)
Those are Fluids & Girl Flesh by May Leitz plus Cuckoo by Gretchen Felker-Martin
It's like anything you will get better with practice and it can be tricky and frustrating at the start for certain techniques but over time you can improve and things will get simpler/faster.