There is a ton of advice on this board on this stuff. I guess the one thing I would say from my own limited experience (making slow but steady progress from an MTBI that occurred 7 weeks ago) is take it super-slow - meaning physical and cognitive rest - until you get better. This might be a week or two; it might take longer. Be patient.

Here's a basic primer on concussions from a Canadian website that you might find helpful:

http://thinkfirst.ca/programs/concussionqanda.aspx