What to do now?

[SharonCC]

Someone in town was giving away plants she no longer wanted. I took the orchid. I’ve no experience but have been doing a little reading. I gave it 1/4 cup of water, and I cut a dead leaf and two dead arial roots. It’s in an east window, with a grow light to supplement light on cloudy days and evenings. The leaves are quite dusty….I'm not sure how to clean them. Can I just wipe with a damp cloth? There is a stick where I assume the last bloom was clipped. I’m using that to keep it propped up……it’s leaning a bit. Is there anything else that I should do right now?