Special brake spring tools are the best and should be available fairly cheap from your parts store but they aren't necessary. You can improvise with a screwdriver, needle nose and regular pliers and a pair of dyke's.
Only take apart one side at a time so you can use the other side as a reference if you get confused about how it goes back together. Make sure you put the shoes on correctly, the shorter shoe goes to the front.
And you really should have the drums machined before you put them back on. Many parts stores will bo this for free if you buy the new shoes from them.
Best of Luck!
