ok, so here goes. first pic is me holding my straight needle together with the circular. The needle on the left is the straight, the needle on the right is the circular. I am holding the circular straight against the straight all straightened out so the top points up and the bottom points down
The second photo I have cast on my yarn with them together pretending they are one needle
the third photo I have slipped the straight needle out from the bottom and have all of my cast on stitches on my circular.
Now you just follow what the pattern says after you have cast on!
Hope that helps! (I always love visuals)