In chemistry, using the kinetic theory of matter there are four solids, liquids, gasses and plasmas. The kinetic theory states that above absolute zero all molecules are in motion. With solids motion is limited to within a matrix. Liquids the matrix is broken and molecular are free to flow around each other within constraints, with gasses molecules are free to move, and plasmas are effectively gasses that have lost electrons. In our present universe the most common form of matter is a plasma.
The other strange forms (phases) of matter occur when its in a severe condition--that is extremely cold (e.g. Bose condensations) under extreme pressures, or are unusual combinations of subatomic particles that either aren't stable or are found in rare (if ever) environs.
As for normal forms I'd recommend this site from my old alma mater
Purdue Chemistry
Rap
Stumble It!
Tweet This
Bookmark on Delicious
Share on Facebook
Share on MySpace