Welcome to DeviantArt. If you need help with coloring in Photoshop, here's a huge list of tutorials for you to check out: [link]
If you want help with your drawing techniques, I would suggest finding someone whose style you like first, emulating them, and then adapting it to you own style. That's how I got started.
I also recommend a series of books to all new artists: Dynamic Anatomy and Dynamic Figure Drawing, both by Burne Hogarth.
I hope this helps you out some!