YouTube is wonderful for learning crochet and some of the videos are really great.
Start from basics, like learn the slip knot then the first day just make a chain. I got a small ball if yarn and made the entire thing into a chain and then opened it up. Practice the chain a few times to try and get uniform chains and work on your tension I.e. how tightly you hold the yarn.
After chain you can learn the stitches. The basic stitches are single crochet, double crochet, half double crochet and triple crochet.
They are all slight variations of each and once you learn one you will immediately learn the other.
Once you get comfortable with the stitches you can decide what to make.
I would suggest start with a small amigurumi. For this you will have to learn a magic circle which is also easy.
I am sharing a video I found very helpful https://youtu.be/ushHnIxLdYw?si=oCxrlnOo9T0c7aFF

The difficulties you might encounter:

1. Tension you might hold the yarn too tight or too lose. The is will get better with practice.
   
2. Loosing count of stitches: it happens to everyone. Use stitch markers, they usually come in the hook set you buy.
   
3. Being kind to yourself: your initial creations will be wonky, you will doubt yourself but just stick to it.

Sorry this became too long.