When you say you 'did' an hour in the Cub, I think you mean you flew for an hour with your friend in the Cub, is this right?
If so, I understand that he will therefore be P1, and he logs the time.
I presume that he didnt let you take it up solo without previous tailwheel time (insurers aren't keen on that sort of thing!)
Tailwheel training requires mandatory 'differences' training, and this must be conducted by an FI or CRI. There is no prescriptive syllabus for this, but most flying training organisations will have there own, and typically they sell courses of five hours.
I am sure others will add info to my reply, and perhaps correct me on some things, but as I see it the hour is not yours to log.
I'm sure you enjoyed it though!
