1. /castsequence spell1, spell2
or you could have /castrandom spell1, spell2
you will need to press the button several times obviously, you can't do two spells with one click.

2. try and add a /follow in your macro, so that your alt keeps up with the main.
You should also read the topics about the "Interact with" changes. Do a search on that and it should give you a few threads.

3. check the "Interact with" thingy again
Yes trial accounts have lots of limitations. if you're in a group, you could try and make the loot *Free for All* (it's an loot option down your portrait in-game) and loot everything from the main. Careful, your alt will not automatically pick up quest items though, you'll still need to pick up those.

4. Class quests are obviously not cross-class, you'll just have to do them one toon at the time. You can still do them with the full group though, it will make them easier.

Welcome aboard, as long as you can attack with both your toons and heal your main with your alt, you've probably done the most difficult part :-) the rest is just tweaking. lots of it hehe