If you are a novice at scorpion keeping, your best bet would be to get Barron's book Scorpions: A Complete pet owner's manual. (pictured) Make sure you get the second addition. I am waiting for stock on them, don't know when it will be available,sometime soon.
Species specific books are very hard to come by and also very expensive. I'll definitely recommend this book to anyone wanting to learn more about successfully keeping these animals in captivity.
I have P.imperator young, ±8cm for R500 if you or anybody else is interested. They are ±1,5 yrs old, so not a bad price for them in my opinion.