So much advice can be given really. It depends a lot on what device you have. Research is honestly your best friend when it comes to vaping. Juice tastes different to everyone and the amount of nicotine depends on whether or not you have a favorable vape. To much nicotine can cause a bad throat hit.so much more you could write a book
Do not carry a vape in your pants pockets. Don't carry one where you won't be able to hear it if it starts firing due to being pressed against something.
Welcome to VU advice wise best place to start is have a dig through the forums and get stuck in
My only advice for now is remember to be respectful when vaping in general public areas some of the devices out there can generate massive vapour plumes