This is one of the few things that we cannot elaborate too extensively upon. The actual experimentation is unique to almost every project imaginable. As you begin to gather your data, it is imperative to remember that it is not quite so important to find what you set out to find, but rather to provide accurate results that either support or reject the findings of other research projects, so that we have a better understanding of what is going on within a particular subject. The advancement of science as we know it today has been the result of honest, open and inquiring minds.
Scientific ethics plays a very significant role in true scientific programs.
Another helpful tip is to collect data in tabular form. It makes computations and statistical analyses much easier.