Android phones, apps and tablets

Got another Fire for one of the kids. But it's been so long since I did the Fire toolbox install (and I've only done it once to the other two) that I didn't think to read the guide online and I've already linked the tablet to my account.

Has anyone used the Fire Toolbox recently?

What I'm after is;

1. Confirmation of a safe place to download the most upto date version (mine is v32.2)
   
2. Whether it is that critical that I do the set up on a clean tablet
   
3. If yes to 2. How best to wipe it and start again?
   
4. What is the significance of OTA Updates and do I care?
   
   

Cheers

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