Your first workout is fine, the second though is incomplete. You've only got a tiny amount of strength training here, and it's focusing on the smallest muscles you have... in your arms! Such isolation exercises aren't going to give you the best bang for your time buck. For best results, your strength training should include combo moves that work your entire body, not just your arms. The same with the abs video. Are you attemptign to spot reduce the abs and your arms? Unfortunately, that's not possible; that's why a total-body strength program is best.
It's also important to give your muscles 48 hours between muscle groups to rest and recover; it's when your muscles actually get stronger. When you don't give your body adequate time to rest, you end up breaking your muscles down instead of building them up. Rest days are a valuable, integral part of a complete program.
I would also not do strength and cardio in the same session; whichever you do first, the second will suffer. There's nothing wrong with breaking the sessions up over the course of the day, but doing strength immediately after cardio means your strength won't give you the best possible results.
Here's a good start on beginning full-body training moves: www.sparkpeople.com/blog/blog.asp?post=10_
Don't be afraid of heavy weights, either; light weights are okay when you're getting started, but you'll adapt quickly, and if you really want to look awesome, lift heavy!
Edited by: DRAGONCHILDE at: 8/8/2013 (20:57)