Any bit of information will help.

[ Since the people, who were responsible for bringing him here, just shove shoved a bunch of information at him and then simply left him on his own. There's probably something they neglected (or decided it was too insignificant in their powerpoint) to inform him. ]

Honestly, I have a lot of questions, but I'm not sure where to begin.

[ Maybe start with the simplest ones. ]

When was the last time you saw me?