1. There's no tutorial.. Make an event. Click "Add action" then "System" then "Set layout angle"
2. There's no tutorial.. Admittedly, the mode7 effect is quite difficult to use and I don't think anyone's really mastered it enough to write a whole tutorial on it..
Here you can find the effect and if you'll read through the thread, there are some useful examples people have made.
3. Functions are triggers, as is "on key pressed". You can not use multiple triggers together.
4. Not sure that picture is clarifying anything for me.. You just want to change the width or height? You can definitely do that.
6. Hey, me too! ...but like newt said..