Good move! Orchids are not hard to maintain aslong as you follow their individual care needs. Most are epiphytes ( live in and on trees and the roots cling to the tree bark for support). They are not parasites. Allow your roots to breathe, opening up the media, while providing the humidity and dont let the pot become too wet or roots will rot in the decaying bark/ moss. privide sufficient light applicable to the individual needs. Your good to go. Overwatering is the most common error for killing orchids. have a look at how they grow in wild, youll notice that the roots are not submerged in media, but open to cature raindrops and the nutrition content as the rain runs down trees picking up organic humus etc and washes over the roots. The orchids absorb what they can and when so you can see why they rot in pots. Some are ground growing (terrestrial) like paphiopedilum and different approach to care is required. Anything that seems out of the ordinary with your plants - research it or ask.

You will find great pleasure in growing your orchids. Enjoy