I am not sure if I can expand or not, jadrel but I will give it a go.
Basically what TG would do would send me a link to a site such as castle realm and tell me to read a specific article. Once that article was read I was then supposed to write a short essay about how I felt about that particular piece and why. I would have to include if it was something that I would like to try in r/l or if it was a theory I would agree with.
He also got me to write stories, usually BDSM related with things that I would like to try. We also talked about me writing a submissive's journal where I could express any thoughts or opinions I happened to have. I could then share it with hi, (so I had to keep any bad thoughts out of it... just kidding). Other than that, we just talked a lot, got to know each other so that when we did finally get together in r/l we would kind of know what each other wanted and expected.
However, if your online relationship ever goes to r/l, just remember that online relationships are completely different than r/l onesHope that helps.