The best thing for you to do would be to get someone in your area who can see what you are doing to help. The ideal candidate would be a 14-year old, 145 pounds, 6' 3" tall, I.Q. 175, who could be bribed with a plate of cookies; chocolate chip with walnuts. Young men with that body type can eat about 2,000 calories an hour, every hour. Get a gallon of milk to wash them down with. He'll be in heaven.
Someone at your church, at work or in your neighborhood must know someone like that. The important point is to get him to sit in a chair at least three feet from the PC and TELL you what to do, not do it while you watch; you'll learn it 80 times better by doing than by watching. You may have to have a second plate of cookies in reserve to keep his hands busy.
PAF is a program. It doesn't have any data in it. It is like an album for a stamp collector. It will show you what you need. The attachment your friend sent is probably a GEDCOM. It will have data about your family.
You should be able to save the attachment in the E-mail, then import it into PAF. This is the electronic equivalent of buying a stamp album and a bucket of unsorted stamps, waving a magic wand, and having the computer put the stamps in exactly the right order in your album.