Progressing - and complex models

Since I started using Blender about a year ago, I am amazed at the 
things I can now do without spending hours sweating and worrying away 
at tiny problems.

However, I have not, so far, attempted any projects involving the 
human figure, which I would like to learn soon. Can anybody offer any 
advice or pointers to tutorials on the subject of draping and posing 
human figures?

And also, resources that would help with natural elements - fruit, 
vegetables, and trees?

Thanks all