update questions

Hiya,

Im trying to update from 11.1.3 to the latest version which from what I can tell is 11.3.1.



I need to know a couple of things. Do I uninstall 11.1.3 first and how? Do I need to install the air creative collection again? Not even sure which version I have. If so how do I get it? DO I need to update air expansion pack? if so how?

Is there anything else I need to install such as effects plugins etc? I have tried finding this info but have found it to be confusing so sorry if these are obvious to others.



Thanks