Mysailorson, my son is ship 4 division 806. I'm glad you got your letter!! Yeah!!!!
For your convenience - here is a list of groups formed already associated with the PIR dates. You can find more lists under FORUM: How To Do Stuff on N4M.
Don't sweat it. It took me awhile too, even though I am very computer savvy! This site is not the easiest to learn. That was one of the reasons I compiled the lists. The are a number of topics under the HOW TO DO STUFF ON N4M that will help you learn to navigate this site. Start with this BLOG.
then proceed to these topics:
some of the discussion I posted last year but almost all of the info is still applicable.
Good luck to your son/daughter. Please thank him/her for us.