Contd.
At any rate, the newly rooted plant is placed on a bed of pebbles (I use the kind I bought for my bonsai trees.) They should cover an inch or so in the tray. Then, add water to the tray. Enough to see it standing in the pebbles but not covering them. The actual roots of the orchids should never touch the water. The whole shebang should then be placed in the aforementioned area free of drafts and any changes of temps. They should get as much natural sunlight as possible... at least 6 hours daily. Again, your local gardening store should be able to supply you with a grow light if you don't have a place suitably lit by sun. They're not expensive. (Look for one giving at least 1,000 footcandles (fc) ). A fluorescent light works well.
So, OK, you'll need a spray bottle with the spray emitting a light mist. Again, to keep the humidity up (aiming for 60 to 70%) mist the plant lightly once a day or so, but not in the evening. You don't want drops of water sitting on the plant during night hours (it'll start rot which is fatal (to the plant, not you, hopefully).
Your garden store or online Googling will help you with any fertilizer requirements, which will be very, very small. Keep humidity up and light on and you should have some success... Best of luck!