Drying, or removal of residual water that is present in an organic liquid, is an important step done before distillation of a liquid and after a liquid-liquid extraction. The technique involves treatment of a liquid with a solid hygroscopic agent which can then be removed via filtration.
Solid products are isolated from dried solutions by evaporating the solvent. The solid so obtained may need to be dried to remove residual solvent.

Drying liquids by Patty Feist at the University of Colorado -- excellent, as is all their lab stuff
http://orgchem.colorado.edu/hndbksupport/drying/drying.html

Drying of solutions (liquids) by Daniel A. Straus at San Jose State at
http://www.4chemistry.org/DRYSOLN%20htms/DrySolution.htm
http://www.chemistry.sjsu.edu/straus/DRY%20SOL%27N%20htms/DrySolution.htm

QuickTime video on drying of solutions by Daniel A. Straus at San Jose State at
http://www.4chemistry.org/VIDEOS/dryingsolution.mov
http://www.chemistry.sjsu.edu/straus/VIDEOS/dryingsolution.mov

Drying a liquid FAQ by Daniel A. Straus at San Jose State U
http://www.4chemistry.org/FAQ/Technique%20FAQ/Drying%20of%20a%20LiquidFAQ.htm
http://www.chemistry.sjsu.edu/straus/FAQ/Technique%20FAQ/Drying%20of%20a%20LiquidFAQ.htm

Evaporation by Daniel A. Straus at San Jose State U
http://www.4chemistry.org/EVAPOPRATION%20htms/evaporat.htm

Drying of solids by Daniel A. Straus at San Jose State
http://www.4chemistry.org/DRY%20SOLID%20htms/DrySolid.htm

QuickTime video on drying of solids by Daniel A. Straus at San Jose State
http://www.4chemistry.org/VIDEOS/dryingsolids.mov
http://www.chemistry.sjsu.edu/straus/stream/dryingsolids.mov

Drying solids FAQ by Daniel A. Straus at San Jose State U
http://www.4chemistry.org/FAQ/Technique%20FAQ/DryingSolidFAQ.htm
http://www.chemistry.sjsu.edu/straus/FAQ/Technique%20FAQ/DryingSolidFAQ.htm