AMDMan2016 said:
Well I Personally use Avast on most of the machines here, except the really slow one lol, but I might put it back on there

Offline install is basically the full install, Though the Online one is recommend on Avast Forum as it gets the latest updates during the install, as well as any micro update or Emergency updates. Then once the install is finished I myself normally reboot system, then configure system and such, Activate it, and that's basically it

Longtime Avast user since 2006 myself
Avast (Internet Security) for me always and has been for a long long time.