A topic I actually know something about

The trick with orchids is that the term orchid encompasses a huge variety of plants- that all have different needs and requirements to survive and bloom. It helps to have a greenhouse, but it isn't required.
A good source of info in addition to the ones mentioned above is the American Orchid Society. (AOS.org). They have culture sheets for different types of orchids that tells you what they need to do well, as well as tips for growing indoors. I joined a local orchid society, and get a lot of information from the folks that grow in my area.
I enjoy orchids due to the challenges of growing them, and then the satisfaction when they bloom. This is one of my favorites.