I know there is another thread going, but those folks are several months into it. So, here's one for those of us just starting in August and September.
I currently have this out from Netflix until my own copy from Amazon arrives. I'm using a couple of two pound weights I picked up at Wal-Mart. I don't use a mat because I've been doing this in a carpeted room.
I've done the whole Level 1 routine four days in a row now. I cannot do the push-ups to save my life and the "jump rope" jumps kill me, too. Otherwise, I've been happy with how well I'm doing. I hurt less today than I did after my first day, even though I went hiking this morning. (OK, so hiking included the toddler and the baby, so it wasn't vigorous!)
I've lost one pound so far, but that was after doing the routines only twice. I swear I already see a difference in my muffin top, but I haven't measured myself.
I'm truly trying to push out these last 10 pounds for my mid-September goal.

I'm not on the 30 Day Shred, but I did just get my Turbo Jam dvd and today is my 2nd day. It's a killer too! When I was thinking of 30 Day Shred I saw those push ups and was thinking OH MY!!!! lol Well I'd like to be your buddy even though we're not on the same video. 
still battling with the side lunges. As for the push ups, I take a looooong time to place my hands in a push up position that I start with them when they have probably made 5 push ups of course, I don't finish also with them. Life isn't easy. is it?