A good way to start is to draw super heroes from comic books. Once you have the required skills to draw the human body from reference, then draw from your imagination.

 

Welcome to the forum and the world of art!

Art exercises are a great way to start. Keep working with them even to just "flex your artistic muscles" after you have become an accomplished artist.

As for your question, it is extremely difficult to draw or paint from memory if you have not developed any memories yet. To draw you are trying to render your 3D world on a flat piece of paper. You need to "train your brain" to understand things differently to fit on that flat page convincingly. That takes drawing from models and pictures and things around you. Just start drawing everything you see after lots (and I mean LOTS) of practice, you may be able to pull a convincing image out of your head.

Just remember,...if your aren't having fun, you're doing it wrong! :biggrin:

 

check out this website : www.drawabox.com

it has a nice approach with lessons and explanations how you can spot your mistakes while doing the lessons.

 

There's a nice trick a friend of mine once showed me - If you're drawing with a pencil, and if you're coloring, you've probably noticed that it's all lines. You can rub a colored part of the drawing to remove the 'lines' and make it look smooth, you can also add shadows that way.

Then again, don't mind this. I never took a drawing class in my life, just remember this from back when I liked to draw stuff.

 

When it comes to anatomy I find the youtube channel Proko very good. If you follow his videos on it from oldest to newest, you'll find that he builds it up in a very easy to follow way, gradually increasing the difficulty and complexity of what he's explaining. He starts out with basic tips and tricks, and the most recent videos really delve into specific parts of the body and how the musculature there exactly works. There's a lot of video's and it'll take some time, but I'd say he's pretty good.

Now, at the same time you'll just have to make stuff, just watching tuts won't cut it of course, so I would suggest just going out and about and draw. People on the bus, friends who are just relaxing; even if your grasp of anatomy isn't that great yet, you learn alot from throwing aside your expectations for a bit and just learn to quickly jot down the essence of what you see. The first ones will probably look horrible, or you'll be done with the head and find the person has already moved, but that's part of the game, that's something you'll improve on over time.
30/60/90 seconds drawings are a good one as well and there's plenty of sites that offer timers and reference images for that.