Everyone has their tips and tricks on how best to prepare for a fast. My brother likes to drink a bottle of Powerade to build up his electrolytes. My father slowly weans off his coffee starting a week before to help avoid the caffeine withdrawal headache. My mother always made us bland food so we wouldn't be thirsty from too much salt. Some people feel you have to just eat like crazy the day before so you are so full you won't feel hungry the next day. Others gradually eat less and less beginning a few days before the fast. Whatever your personal eating strategy, the most important advice I can give is to drink plenty of water the day before. The hardest part of fasting and the side-effects are caused by dehydration. So drink up the whole day before and then enjoy a well-balanced meal before your fast begins.
Here is a menu to help you have an easy fast: