You could start out by creating a database of prospective customers. If you don't have a rolodex or a computer database program, get one set up. Put in the names, addresses, phone numbers, and email addresses of anyone you can contact about your new business. This will give you a head start on your future customer mailing list.
You could draft a letter to the people you put in your prospective client database. Let people know you will be starting a new business, give your reasons why (need extra income, need to pay off bills, saving for Disney World, saving for a mission trip, etc.), and tell them to expect to hear from you within the next couple of months with more information.
Another tip is to look for the book
Build it Big, which is put out by the DSWA. Here is a link to their website: This should take you directly to the store section of their webpage. Their publications are worth every penny, and can really help you get started and help you as you continue on.
Don't forget to at least look into getting business cards. Business cards are a must as a marketing tool. You can hand them out so many places, so they are good to have and keep with you at all times. My favorite place to get cards is Vista Print at .
My last tip is to scour the internet for tips, advice, and ideas, and start saving the information either in your computer our a filing cabinet.
There is a ton of excellent information available out there to help you make your home party plan business a great success, and there's no reason you can't start looking right now, even though you haven't technically started yet. I think taking the time to do research and set some things up now will really pay off in the long run!
Take care, and good luck!