Hi kc and Welcome to the forum, you might want to have a look at the following FAQ which explains where everything is
Welcome to Benefits and Work The DLA to PIP switch is still ongoing. As you were under the age of 65 on 8/04/2013 you will be 'invited' to claim PIP at some stage.
It was intended that all claimants would be switched by 30/09/2017 but I don't know whether that is still expected.
If you want to understand the process, and what you will be expected to do, please have a look at out PIP guide
PIP help for claimants If you have further questions please reply to this message and we will do our best to help. You will find this again easily in future if you bookmark/favourite it on your web browser now