Hi, adobe Flash and acrobat are proprietary, but not drivers, they are just applications. If its just adobe you're concerned about, then don't worry, adobe provides .deb packages for ubuntu. With ubuntu you should never have to worry about drivers per say, as they've got pretty good at hardware/driver detecion.
As for your question, try starting here
and just FYI : adober reader isn't 100% needed as both Gnome and KDE desktops provide PDF (and more) readers.