This is easy to do and can be done either directly on on your ipad or on your computer before you sinc it to your ipad.
First you must hold your finger on the app until all apps are shaking. Once you have done this you can move the apps around.
You simply select the app that you want to be in a folder and drag it over another app that is similar that you want to have together. It will create a folder where you have the opportunity to give it a name, such as “Social” or “Photography”.
If you want to remove an app, just drag it out of the folder.