Forum:Traps, Spells, Speeds, etc. @.@

Alright so after a long break away from Yu-Gi-Oh a few friends decided to take it back up after hitting a lull with our originality in Magic: The Gathering. Now I'm too used to the rules of Magic so the Yu-Gi-Oh rules are throwing me off a bit. Here's a few things that I've run into issues with: 1. Dust Tornado, let's say someone activates a trap (IE: Mirror Force) can you stop that with Dust Tornado? 2. Dust Tornado, does using Dust Tornado on a Speed 1 card someone plays (IE: Block Attack) does that stop it? 3. Level Limit Area - B and Final Attack Orders what's the ruling on speeds and stuff with them?