So I'm looking for a good place to buy from or what kind is good to use. Help or any ideas?
A tier is a level. So you have 7 cases per level. You have 9 levels. So you have 9*7= 63
If you are working at a C right now then I suggest you do the higher paper. What grade would you like to achieve? If you want to achieve C+ then it's a must to do a higher paper. If you work at a C/B grade you will see it is simpler to get a higher grade on the higher paper than the foundation paper. I do a higher paper myself and it is so much better! Still, it would be a good idea if you asked your teachers whether they think your capable of doing higher.
