Hi, Keri!
Here is a link I have on fluid and electrolytes:
http://www.indstate.edu/mary/Fluidlytecf/index.htm - a slide show presentation on fluid and electrolytes. Covers sodium, potassium and calcium and treatment including IV fluids.
Here are links to two of the nursing student forums:
http://allnurses.com/forums/f205/ - Nursing Student Assistance Forums
http://allnurses.com/forums/f50/ - the General Nursing Student Discussion forum
See you on the forums! Welcome to allnurses!