there is loads of information in the following section of the forum:
http://www.rv-orchidworks.com/orchid...s-accessories/. You can find all the different sections by clicking on the "Enter the OrchidTalk Orchid Forums link on the front page, which you will find just below the slideshow. This lists all the different forums, then when you click on an individual forum it will show you all the threads under that forum.
There has been quite a lot of debate and along with ideas of which plants suit S/H, there is a good repotting pictorial that explains exactly what it is and how it is done.
There's no way you'd catch me trying to explain it, because there are much more suitable people out there, who know way more! But I know how daunting it can be when you want to find out information and just don't know where to start
As to your last question, no you don't get an email notifcation, but there is the facility to see new posts under the New Posts link at the top, and you can easily see if someone has responded. I think you can subscribe to the thread under your User Specs - click on User CP to fund the subscriptions section, but Brutal Dreamer is the better person to answer this question.
I hope this helps a bit...