Im new to Unreal 4 so this is a beginners questions how do I add collisions so my actor can hit and collide with other meshes and maybe add some cool affects.
I need some Help getting startred
Welcome to Unreal 
Try following this documentation: https://docs.unrealengine.com/latest/INT/Engine/Content/Types/StaticMeshes/HowTo/SettingCollision/index.html