Solutions, Solutes & Solvents (Chemistry)
Solutions 
The site's layout shows you that this site was created by a real chemist. There is a lot of information and it is generally well written. It goes through most of what an undergraduate needs to know about solutions and colligative properties.
Chemistry Tutorial 10.1a: Solutions And Solubility 
A great tutorial on Solutions. He keeps it pretty basic, but if you are preparing for a class on solutions or just need a review then this video is great.
