Tips on getting fulltime help for baby

Hi

We have just moved to Hong Kong 3 days ago with a 5 month old baby. I'm really looking for some guidelines and tips on how to find a full time help, what I should look for and be careful of.

Are there any experienced moms here with the right questions to ask ?

Also, what is the usual fees of agencies and is that the rightway to get the help? Any recommended agencies.

Please do help with some answers so we start feeling a bit more settled.

Thanks a lot