Seriously? If you don't know where the dipstick is to check the tranny fluid, you probably should not be looking or asking. My suggestion would be to take your truck into an authorized service center like an Oil Stop or similar business and ask them to check your fluids for you.
the 2009 tacoma is a closed transmission and it DOES NOT HAVE A DIP STICK. you have to take it to the dealer aor a trans shop to have it checked or change. so before you start giving people a hard time know your facts first. so you can take your foot out of your mouth now