How do I re-acquaint yourself with my Mac.?

Answer:

If you aim what I think you tight, try rebooting and clear out the P ram.

Instructions: walk to Help and type in go back to the beginning P ram

Or, repartition your knotty drive and reinstall (save your files, wipe it clean, and reinstall OSX).

If your have problems, try checking things like the allocation of your virtual memory, cache, etc.

Hope that helps.
What do you tight by 'refresh'? Start all over? Erase and Install or Archive and Install will do afterwards.