Any guides or things to know before playing OTB?

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Ex0tic_Python

I've always played chess online and love it and would love to get better. I've also always wanted to try and play chess in person at a club or whatnot but I doubt I'm good enough at the moment to do so. Regardless, I was wondering if there were any guides on the basics of OTB chess or things to know before trying it at a club or any rules that don't apply in online chess that someone who only plays online would know. Any help or pointers would be appreciated

Ex0tic_Python

I've noticed that from playing OTB chess casually with a friend without time controls. I've been able to get better at calculating OTB tho