Colleen,

That is a terribly hard question to answer. You need to identify the orchid type(s) that will do well in your environment then post your question.

There are many gurus on this forum specializing in their respective genus so the question needs to be more specific. There are slipper orchids (phrag/paph), moth orchids (phal), butterfly orchids (psychopsis), spider orchids (brassia), dancing lady orchids (oncidium), and the most beautiful of them all, the cattleyas, and these are only the basics.

Hope it helps.