Scan pdf convert to rtf to cut and paste in mac word doc

HI -
I need help. I just purchased a Macbook Air (someone sold my source at school)
I have two things I need to do:

1. Receive PDF from PC user and be able to cut and paste into a Mac Word Doc
and keeping the line spacing/format

2. Scan my own PDF from PC scanner and I was using Automator (robot looking icon) to format in RTF in order to cut and paste into MAC Word Doc.

I would be forever be grateful if anyone can help me.

Oh and some basic knowledge need since I am a new Mac User:

1. you know on a PC you have a print screen on your keyboard

2. and a insert button ( that lets you delete before and after the cursor)

3. and also a right click option

Where can I find all these tools. Is there a tutorial for new users?