Welcome to Orchidboard!!!
I've done similar back when new to the hobby, and bought lots of very different orchids because they were 'pretty'. Sadly many of them died. On the plus side, this approach does help you figure out really quickly which types of orchids do well for you, and which don't!
Nowadays I only grow a couple types that I do better with, though I can't say that I grow anything exceptionally well compared to most of the experienced growers here. But I have fun anyways!