These are all the Pwinsher challenger compilations.  

When you watch them, try to see what works and doesn't.  You can tell basically after awhile what the good ones are.

For example one of the better ones, for the people who understand these challenges, have a movement to guide the eye, and then the actual motion of the story.

It takes time for your eye to find whats relevant.

This is one of the most comprehensive workflow Tutorials for Landscapes in blender.  He talks about how to blend textures, use meshes instead of displacement, and using lattice for randomness.   If you watch this video 3 times, first take the info in.  Second, take notes, third, Try different parts using his Add on. (free version)

For those of you who don't know Humble Bundle sometimes has tons of assets bundled for about 30$   They also have a awesome 1$ deals too.  

Grab, sometimes hundreds of Models, Set Pieces, or Characters for $25 or $30.

www.HumbleBundle.com

The secrets of luminaria contest.

This was made with ai not blender. Davinic to edit. and music maker for the music.

3d total has quite a large free section of magazines and information relating to 3d.

You can get the free stuff here.