CA Glue is Cyanoacrylate glue. It can a fast acting glue used for fastening photo-etched (PE) parts to a model or for filling small cracks. You can get it in a liquid version (fast acting/instant bonding) or a gel version (slower acting) .
You should never use it on Clear Plastic (Car windows or Canopies) as it will cloud the surface.
You should also be very careful that you do not get any of it on your skin, especially around the eyes. There are solvents that you can get do undo a bond, but most times on skin, involves cutting apart the bonded parts.
There are many different packaging sellers; Zap, Crazy Glue, Lepages, however they are all selling the virtual same product.
Myself, I use Lepages Gel with a fast acting binding agent, called Zap Kicker, which cures the glue quickly.