The perfect wedding is planned using copious amounts of lists. If you do not make lists something is bound to go undone. You can lists items based on length of time or category. Every item that you will need to pull off a great wedding is listed here and it is the perfect place to begin planning your wedding budget.
Look at the items listed on the category wise list, then google them to get the price. The list has columns where you can enter the price for items or a vendors estimate.
There is also a column where you can input the actual cost to see where your savings are or worse if you underestimated a cost.