Look at me mommy!

Today I showed my mommy that I can be on my belly and pull myself up to a sitting position.  I don't want to lie down any longer and now, when I don't want to lay, I just pull myself up and sit up.  It's great.  I can also put myself in a crawling position but I'm not quite sure what to do when I get there.  Mommy has tried to show me how to move my arms and legs but I don't get it.