Easiest plants to keep in the house! Years ago a nursery place told me to put 2 TBSP of water on my orchids every 8 days or when their 'soil' is dry, they do not like to be wet. Just put them in a non-drafty area and indirect sunlight. I keep them all over my home now and they last forever and re-bloom for me. I even pot them in my bigger pots and put several in the same pot. I LOVE to give them as flower arrangements for special occasions or birthdays!
I have luck with Kroger's orchids priced from 9.99 to 19.99 and IKEA's orchids 9.99 to 17.99.