Potentially meeting a guy from grindr for first time

Hi guys,I’m 19 years old and have recently accepted the fact that I am bisexual, and I want to try gay sex.I have been talking to a guy who is 28 on grindr, who is my type and doesn’t seem weird. We have arranged to meet up tomorrow, with him picking me up from the nearby tube station.I’ve come here to just get some advice so I don’t do anything stupid.Is using Grindr for a first time experience a good idea? Bear in mind I have had sex with girls before so it’s not losing my virginity.Second, how can I go about this as safe as possible?Please also give any other advice you haveThank you :)