Chemical Kinetics - Reaction Rates

Im trying to understand exactly what does these orders means..damn, who ask me not to study real hard during my diploma???? now what? i can still refer to the internet and reference book off course...

well, found 2 web pages that is useful

http://www.chem.arizona.edu/~salzmanr/480a/480ants/kinintro/kinintro.html

http://www-teach.ch.cam.ac.uk/teach/IA/KCR_full.pdf