Don't call the ladies "manang"
In Manila, it is common to refer to anyone older than you as "manang / manong", or "ate / kuya", both meaning elder sister or brother. In Batangas, the proper term for respect is "Ka". For example, you would call an elder who is not your relative "Ka -insert_name_here-", say for example, Ka Roger or Ka Pedring or Ka Linda.
When I was newly transplanted, some colleagues and I would have lunch at this nearby "bangihan" (bbq) place. One time, I was wanting something spicy for my sauce, so I called out to the serving lady, "Manang, pahingi ho ng sili (can I have some chili)". The lady just smiled at me and asked for some chili from another serving lady. The other lady then brought her some chili teasing, "O, Ka Manang, eto na yung sili! (here's the chili!)". Hehehehe. Pwnd! :p
Call me "Utoy" (not tutoy!)
On the other end of the geriatric spectrum, while elders are called "Ka", young Batangueño boys are referred to as "utoy" and young Batangueño girls are called "ineng". Being baby-faced and short (ouch!), I'm often called "utoy" here. That actually took some getting used to for my ears as "utoy" sounds very similar to "tutoy" which is in Manila, a short name for a kid's penis. Lol!
It's pronounced "gah"
One of the very first Batangueño things I learned was how to properly pronounce "ga". I had always thought it was pronounced with a shortened guttural "a" sound, pronouncing the "g" then closing your throat as if you choking. I was wrong! :p It's pronounced with a bit more sustained "a" (like "gaa" or "gah").
Now go practice!