Sunny, don't let one person's experience be the "guiding light" of your thinking. What works well for some might be pure plant death for others (like frostedeyes, apparently!).
I am concerned with your first post, however - it sounds like what you got was finely-ground coconut coir, often sold as just "coir" or "coco-peat". While that can be used for orchids (you had better be real careful about your watering), what you really want is coconut husk chips (CHC) if you're going with that base material.
Coconut products are used in a variety of orchid-related methods. Starting with the hard shell, cut in half and drilled, you've got a flower pot.
The fiber that's outside of that (coir) is used as a coarse potting medium for plants that like a lot of air to the roots, as a basket liner, etc. Grind that coir up and you've got the peat substitute I mentioned above.
Outside of that is the husk, a thick, pithy material that can be used as slabs, but is more often chopped up into pieces used as a bark substitute.
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