The key to any trip into a cave is safety. This should be your primary concern, especially when entering a cave you are unfamiliar with.
One key item to help promote safety is a hardhat.
It’s impossible to see every direction, and getting knocked out below the surface is certainly no fun for you.
Rocks jut out from cave walls and the ceiling, and it is easy to not notice them or forget a rock you’ve just passed.
You can find hard hats for sale online, and in most hardware departments at major stores.