1st.... You should inspect is the swingarm bearings. They tend to fall to sh!t after a while. Pivot Works makes replacement kits if they are totaled, which they probably are if they haven't been greased at least 1x a year.
2nd.... Feel for play in the wheel bearings. Rock tire side to side with bike on stand.
3rd.... Change your brake fluid front and rear. Its cheap and easy. Check pads.
4th.... Change your tranny oil. Run around your street a little with new oil in and change it again. Again, cheap and easy.
5th.... Check air filter for cleanliness and tears. Make sure there is ample grease to seal the filter to the box. While your there toss that lid. Your bike will breath better.
6th.... Pull the gas pecock and make sure the screens are clean. Blow them off with carb cleaner if dirty.
7th.... If you have a aftermarket silencer, pull packing and check it. Make sure you have new packing before you do this.
8th.... Pull pipe and check that there is the brass washer between the pipe and the head. No washer can wear a hole in the head.
9th.... Check spokes. If you dont have a spoke clicker, tap on them with size wrench that you use to tighten them and turn them all until you have a uniform sound by tapping on them. Base the sound from how the majority of them sound. Its kinda crude, but it works. Have penetrant nearby.
10th.... Check for chain wear and tightness. Are your sprockets worn to sharp points?
11th.... Pull carb and reed cage to inspect the reeds. If the reeds are chipped or otherwise, you will have a hell of a time tuning your carb.
12th.... Inspect your KIPS valve for correct movement. Consult your manual for this procedure. If it is broke, because it will break with lack of PM, you will lack power. Alot of power.
13th.... Inspect plug. If its a cheap stock plug, put it aside for emergency use and install a new one. My motto again, cheap and easy. Unless you use the EVX plugs that I run. They are worth it to me.
14th.... Torque all essential fastners to the specks in your manual. Alot can happen in 8 years. Use blue locktite on neccesary bolts and nuts.
15th.... Is there cotter pins where there should be? In good condition?
16th.... When was the last time the suspension oil has been changed. If you havent done this before, have a shop do it for you. Bad oil gives you a crappy ride and wears out your seals. Most people have their suspension serviced once a year.
17th.... Check your race sag. Sag is different for riders of different weight.
18th.... Check for play in your steering head bearings.
Like KTA said, get a manual right off the bat. Clean your bike well before going thru this list. It makes it easier to work on a clean bike.
I hope this isnt overwhelming, but it needs to be done if you dont know the exact history of this bike. Even if you got it from a friend, working on the bike will familiarize you with your new woman, and its fun anyways. If you can do all these things you will have a baseline to go from when future problems arise.
Good Luck.
B.