Picking up when in round

I have just knitted the bottom of a bag and don’t know how to pick up stitches now that I have to knit in the round, up? I don’t know which end of the needle to use? Is there a website with a video of this or could someone suggest anything? I have done it once before, but I have since forgotten, I know where the stitches need to go, just how to attach it to my project.

Here is video on picking up stitches.

Just pick up the stitches all around the edge with one end of your circular needle and then start knitting with both needles when they’re all picked up.