When you want to use a scroll, make sure you have the correct amount of mana (for example,if you want to use healing,& it takes 10 mana points, you must have the points, then give it a number, like 4, close the menu, press 4, & the spell will show up on the screen. Then press ctrl+up to use the spell. Sometimes, you have to hold it a while before it works. You can assign a number to each of your spells, & press that number for each spell. There are 2 places I can think of where you can raise your mana points - one is in the New Camp, from Chronos, the guy who walks around the ore mound all day, & one is in the Swamp Camp, from Bal Cadar.
"Christof, do not play with thy food. 'tis unseemly".