How often should i water my 1-2 year old Japanese Juniper Bonsai, i live in florida and its summer right now.?

i live in florida and its summer right now. i have had it for a couple of days and i leave it on a shaded patio but it still recieves light and heat. i just want to know how often to water it and how much water should i use. and i want to know how to make the trunk thick too.