You'd be absolutely welcome at Ruby Manor. We've sold all the tickets for the moment, but there is a waiting list[1] which we'll use if any further tickets become available.
The presentation content entirely depends on the preferences of everyone using Vestibule[2], so while we can't guarantee that there will be any presentations specifically about beginning Ruby, you could (and should) use both Vestibule and the mailing list[3] to encourage other members of the community to propose talks that are most interesting to you.
Or, of course, propose a talk yourself! I'm sure you have a very interesting perspective on Ruby that many other people will be interested in.
All the best,
- James