We actually have posted now the original Getting Started Guide that our beloved GlobalMod of the last 9 years created. She is no longer here but the massive amount of work she put into his forum remains, and this is part of it:.
Take a look at that, particularly the links in “How do I get started in black magick?” and posts that are literally called “getting started” where you can see the ideas given to others in your position.
Personally I second the idea to get your spiritual hygiene on point first. Then pick up a book like Corwin Hargrove’s Goetia Pathworking, and work it front to back. By the time you’ve done that, you’re well on your way.
Also check out the top link in the Book Recommendations topic for beginner friendly books: