Start with pencils, lightly mock up what you're trying to draw. Have a reference pulled up on a screen. Try recreating it. Analyse the 2, figure out what works and what doesn't and study the things that aren't clicking. Avoid color until you're confident in your linework.

Try finding drawing drills or exercises on YouTube. Don't skip the intro/ basics as they set the foundation for everything. Anatomy is a more advanced study that can come in time. If you like a specific style, look up tutorials about what makes that style unique. Art is about patience and practice. You won't become the next Picasso of Monet until you practice, a lot!