What you've got is a reasonable deck considering how limited your collection/experience is at the moment. As you learn and collect more, you'll learn how to focus a deck's strategy and achieve what you are looking for. Definitely check out those youtube videos.
What I try to do is focus on a couple keyword strategies\ creature types\ or combos, and I build the deck around that theme. I probably have 5,000+ cards, so I have a lot to choose from. You are probably dealing more with what you got. I recommend you buy more out the same sets you already have, to try to pick up some duplicates.
Wall of limbs is definitely fun. Lately, I've seen some casual decks abuse that card with
Solidarity of Heroes.
You'll fondly remember the days when you threw together decks like this.