nostr:npub1hjq6hwdknyj2a5zcyux23umwr8gcxdwfxmcxgud9t0wdne2rhswqskuyxv I don't know where to reliably get some, either. Either you know a guy or you don't. Sorry. I had a friend who had a friend how could get it.
Having someone with you the first time can be good or bad, depending on the person. In my case it was bad, because he was an idiot and wanted me to try all these things, I didn't want to and acted like a know-it-all guru, because he took it once before. 🙄
Of course you become quiet vulnerable while tripping, so prepare a comfortable environment.