If you are logged in, you can find rda-files of a sample for both experiments and the r-file.
To read in an rda-file, just click on it, you don't have to use read.file!
To find out what the dataset is actually called, you can use ls().
One of the take home messages this week was probably, that since there might be a lot of different legitimate ways to analyze your data, it is important, that you have clear predictions beforehand!