WELCOME!
You will find lots of advice and help, on here.
If possible, find a local Model Engineering Club and join.
You will see the work of others and can ask questions about how ikt was made.
You'll soon pick things up.
Learn the basics first of all, and then start studying the more complicated procedures.
But remember that different folk will have different ways of dealing with a problem, depending on their experience, skill and the equipment available.
Howard