General Tuneup - What should I be checking.

[Nightsbane]

I bought my 2005 GZ250 about seven weeks ago. In a couple weeks I will be heading to class and have to take a 25 jaunt on a 55 mph road m-f. I would like to do this as safely as possible, so I need to know what all on the Bike I need to check over and inspect to make sure I am traveling safely. For each step, if you know of a video or online guide it would be of much help. I would like to learn how to maintain this on my own, but am totally new to it right now.

Also ANY and ALL high speed safety tips would be appreciated. In case it isn't added, what PSI should the tires be at? I am six foot tall and 200 pounds.