I think it's pretty well known that Cantonese has a lot of a's and la's attached to the end of sentences. However as a non-native, I have trouble understanding when these are used. For example, when using Pimsleur Cantonese, I've noticed yes/no questions usually have this structure:
你想唔想水啊?
For making suggestions, I've noticed its something like this:
咁,九點啦?
Sometimes I see something like this and I have no clue:
我唔鍾意太濃嘅茶 (the ge or ga sometimes at the end)
Is there a good guide out there for understanding these?