hi EA, you probably broke the left one !
It should be the inner as well.
It is relatively easy to change it but bloody messy
Its one of the jobs I hate doing.
First get under the car and shake the drive shafts to see wich one is broken.
Again its probably the inner one on the gearbox so, take off those 6 screws with the allen key - be careful not to destroy the bolts so make sure your allen key has a good fit and goes all the way in !
Then take off the boot - just slide it in.
The small silver balls will probably fall off as you have broken the bearing inside.
There is a safety pin - remove that and take it completely out.
Be careful when removing the broken " bearing" - there is a side it should go in , so make sure you remember which is the correct side to put the new one
Hope thats what you needed !