This little video shows you how to make a slip knot, hold your hook, hold the yarn, make a foundation chain and double crochet.

Crochet is quite tricky to learn remotely so it really is worth having a lesson if you can, but this video covers all the basics of a beginners lesson

Do practise each step. It's worth getting a really neat chain before moving on to do doubles, with even tension and certainly not too tight!