1- There is a great guide on gunthy forums, @ https://gunthy.org/index.php?board=2.0 however I would suggest getting aws and running it 7/24 like most of us, aws has 1 year free tier to test it out and it is way more than you need for gunbot.

 2- From any reputable reseller (shameless plug, LIKE ME ) or directly from gunthar himself.