I am fairly new to blender, and I am wondering how to change the size of the particles I am working with. They are way to big. Thanks
This can be changed in the particle settings under either Physics or Render (when using a display type that allows this) with the Size slider. You can also change the size of your particle objects by scaling the main object(s) you are using but it's best to control the size via the particle settings.
Additionally, you can randomize the size of your particles by using the Random Size slider.