Here are some helpful links for information regarding selling your home. This information could be a good starting point, but an experienced real estate broker would be able to provide with more specifics.
1. Do I Need To Sell My Home Before Buying A New One? from REALTOR.com
2. How to Make Older Home Appeal to Young Buyers from REALTOR.com
3. Understanding a Comparative Market Analysis from REALTOR.com (Windermere uses a great program called TouchCMA that creates wonderful, informative comparative market analysis presentations for our clients).