Theory Test study book or Android/Windows app?

Evening All!

I’m in the very early stages of going for my LGV C licence (in fact I’ve not even had my medical yet!)

What I would like to know is what you lot recommend to study for the theory test.

Is there a particular book that is recommended?
Is there a good app for an android tablet?
Or is there maybe a good program I an buy for a windows PC?

Any advice is appreciated ☺

The official DSA guide to driving hgvs. Also The DSA official theory test.

PM sent. Thanks!

As for apps. Android get LGV Theory Test (uk) Free. LGV Theory Test Uk Lite and LGV Test all good free apps for tests.