If you follow the directions in the Lee kit, you will be safe. You do not need any additional tools if you re-use brass fired from the same firearm that you plan to re-use it in. Use projectiles of the correct diameter for you cartridge and the exact type of powder listed in the reloading guide and you will be just fine.
Believe it or not Youtube is an excellent reference. It gives you a chance to actually watch someone use the same tools.