How do I swim using this AO, it says it has swimming animations but I cant figure out how to use them?

The swimming animations in the AO's replace flying with swimming animations when you are under linden water. This will not work in prim based water put in swimming pools.

I bought this animation and it it is giving me script errors saying 'animations not found', why?

It sounds like you have probably removed the animations by accident. The are most likely in your inventory, if you put them back inside it should work again.

I bought this AO from your vendor and I don't know how to make it play as my default Avatar animation, how can I?

It sounds like what you purchased is in fact an animation, now an AO. and AO, or animation overrider is a device which you can put your animations in that will play them instead of your default animations. To use animations from the vendors, you will need to put them in and set up an animation overrider.

I bought this stand animation and now the typing animation doesn't play when I type, can I change this?

No you cannot change this in the animation itself. Most requests I have are for animations which get rid of the typing animation, so i have uploaded them at a high enough priority to completely override the typing. If you want to get it back, I have got a free device available which will play the typing animation over the top. You can also load this device with different animations if you wish which will play when you type.

I cannot put any animations inside my AO as they are no copy

Animations do not need to be copyable to put them in your AO. However make sure that you drop your AO on the ground when trying to add new animations to it. You cannot add animations to an attached object unless they are Full Perms anims. You will need to drop it on the ground to edit it.

I want to set up my own animations purchased from another animation set inside this override, how do i do that?

You will need to do the following steps...
a) Drop your AO on the ground
b) Right click on it and select edit
c) Click on the content tab and drag your animations inside it.
d) open the notecard and configure it (detailed instructions on this are supplied with the AO)
e) save the notecard and then issue the command /ao reset (or equivalent command with your AO detailed in the instructions.