I'd like to urge everyone to be nicer and gentler to newcomers. Be supportive and a little more generous. You have managed to hurt the feelings of someone that came here for help.
RNA-Seq is a very complicated topic. The concept of normalization has been changed and reworked many times over. Most of the concepts and explanations that one would find via google searches are only partially right and some have been proven to be incorrect.
As for the original poster: if you used the TopHat pipeline then it has automatically applied a whole slew of normalizations and statistical tests that the original authors thought were appropriate.