Conservative Jewish Synagogue etiquette/advice?

context: I’m ethnically Jewish (on my moms side), though I wasn’t raised Jewish and I don’t know any Hebrew, my Parents always let me believe what I wanted and choose my own beliefs and recently I decided to start actively practicing Judaism. I asked my mom if we could check out our local synagogue which is a conservative synagogue, she said yes. I have been to a Jewish funeral prior to this and that’s the only Jewish event I’ve ever been too. so I was just wondering like what’s the general environment, what should I wear (I’m a teenaged guy) how should I act, etc. I get very anxious about stuff like this so any advice would be appreciated