Inorganic Crystal Structure Building

Hello,

I'm very new to Materials Studio and materials modeling in general.   I have a particular interest in building and creating novel inorganic crystals and evaluating a variety of electronic and thermal properties.  One thing that I think might help me in my quest is easy access to a database or reference that contains space group, lattice parameters, and internal coordinates for a large quantitiy of known materials/crystals. 

Does anyone have some guidance on where to find this information in an organized and searchable format?

Many thanks, bpwagner