Hi there. I can't seem to draw on another plane. I need to draw layers of scaffolds (tissue engineering scaffolds for bone), 90degrees in direction from each n cylindrical.

also, after i extrude one item i cannot extrude another. is it normal?

i thought this should be easy but i still can't solve in after 1 week.. do help. i am beginner in solidworks.

do help me. thx in adv.