is there any learner's guide on how to create brandables?
Follow the logic of a brandable word structure. I would divide all brandables in 4 big groups:
Invented words - letter combinations, sometimes meaningless, sometimes evoking some feelings, yet short and pronounceable. (
Beezo)
Compound words - two/three keywords combinations, not necessarily related directly to each other (
PennyGems)
Portmanteaus (blend words) - a fusion of two words, with some parts truncated, resulting in a new word, blending both meanings into one (
SingZilla)
Suffixed (rare preffixed) words - root word joined with a common suffix (preffix), leaving main meaning but with different perception (
Shopoic)
What I'm pretty sure about BB filtering, is the name should be virgin (not assigned previously to any business), that is my experience. Reasonable criterion, imo.