Jamie, welcome to the forum and sorry to hear you're having amp troubles.........
Noob or not, you did the wise thing taking it to a tech.
All that said, fuses usually blow for a reason........and the solution will be to find the reason.
Were you using the same guitar both times? how is the amp grounded(if at all)?are you using effects pedals? did the tech check the tube sockets and wiring? etc.etc.etc.
Heres one idea..........make a similar post in the "lounge" section, because it's viewed more often than this section by at least 10-1, and there are some really educated, experienced, helpful & friendly people that come here.
Good luck !!