Jonathan, I agree with Lee. Put the hides in the freezer asap. If you don't have fleshing tools (fleshing knife and fleshing beam) the salt won't work. Get your fleshing tools first.
Do you have fleshing tools? Get a fleshing knife like this if you don't:
http://www.pcsoutdoors.com/standardfleshingknife-10.aspx
Do you have a fleshing beam?
To either salt or dry you need to full flesh the hides. I recommend salting in a wet, humid area.
If you have more questions feel free to ask me. I've braintanned probably 25 sheep hides.