Model won't move right with the rig I made an account just to make this post because I've googled it 50000 thousand times and nothing. Please keep in mind I'm new to blender, I've only been using it a few times and this is my first time rigging.

Okay so I'm trying to rig my character to move but it keeps doing this- 



It looks fine at first and it does move, but its also moving things that it shouldn't. As soon As I move that left arm bone, the right one has a seizure. I have no idea what the problem could be. Any help would be appreciated :(
It sounds like the some vertex groups have been connected to the wrong bone in the armature.  Click on the bone that is causing problems then go into weight paint mode and look at what parts of the mesh are being influenced by that bone.