I'm something of a complete begginer myself--having no training with this sort of drawing, and it shows in my sketches, when nothing seems to go together correctly.
My largest problem is proportions right now--I'm not even going to start concerning myself with details until I can learn proportions. My teacher has given me advice on doing everything in 'eye width' for the face, and 'head length'/'foot length' for the rest of the body. However, it's not really working for me, so I am going to try a different approach.
I had a simple idea really--to learn my proportions by doing simple lines in the shape of arms and legs, not really going into detail so that they are distinguishable figures, but so that I know which piece of the body is how long and so forth. The outcome is something of a stick figure, but as I'm going for length, it's actually being quite helpful. I'm not sure if this is a great idea though, just a begginer's thoughts.
"Don't become so enthralled with magic that you forget you can fly without it"