you should start lifting weights now so when you finnish tunning up your bikes you will be able to hold on to them.
dont change your gas/premix oil bran too much, try 1 or 2 and stick with on of them.
buy a clymers manual.
10 w 30 for the trany oil. drain plugs on the bottom and when you fill it dont screw the dip stick on. just hold it as far in as you can and pull it out to get your reading.
only use 92 or higher octain fuel.
make sure your carb slides are even when you pull the throttle.
but get a clymers manual and go from there.