1 Looks like Naiya already told you.

2 A dream guide can mean two things, first, it's a character in your dream who tends to have more intimate knowledge of the dream world than the rest and can show you things. It's also a DV Staff member, this is what is usually referred to in a DV thread. So if you get an answer like "As a Dream Guide," they usually mean us.

3 Depends on what you're interested in, I suggest making a list and putting it by your bed, checking each off as you do it; keeps you motivated