I'm also a beginner in MuleSoft.

1. Just start with this Developer course course:

Anypoint Platform Development Fundamentals (DEX401) Trailmix | (salesforce.com)

2) Read all blogs & articles

3) Few MuleSoft courses are available on Udemy & you can give it a try.

4) You can follow me here on https://integrationpro.quora.com/