Welcome to OB
If you plan on getting a orchid from a big box store you really need to know what a healthy orchid looks like because a lot of times the orchids sold in those stores are not healthy.
Also another thing to think about is when you get a new orchid you may need to repot it soon so it would be a good idea to get a pot, I would recommend a plastic pot clear is my favorite because I can see the roots but that's not a must, also make sure the pot has lots of drainage holes.
You will also need a potting mix I like to make my own but there are places that sell ready made mixes repotme.com has mixes and pot if you want to look there.
You can find lots of info on growing different orchids at aos.org.
Hope this helps and don't forget to let us know what you get
