想開花店,有冇得做?

有冇得做, how long time need to perpare - location, price and product...and your skill too.

If you want to be an investor, you can open a shop very faster,. If you need to study, then decide to open a shop, then you need more time.

try this:http://www.hkafa.com.hk/traditional/courses_list.asp

seldom people like flower in HK.