I bought the RotRL set brand new way back when, opened it up, organized it, played a quick solo game to ensure I grasped the basics. Then I "think" I might have bought one expansion (B) also. Unfortunately, I had to shelve the game for a spell (OK, almost 30 months...)
I was jonesing to do some solo gaming this weekend, and discovered my wife had dropped the box at some point (she admits) and stored it on edge in the garage...
So now I broke it out, reorganized everything into its places and I think I might have (maybe 2?) missing cards...
The reason I say I think I might have bought an expansion is because there are two "sets"... one set of all the cards marked "1" and another set marked "B."
The two cards I think I might be missing is LOOT 1 (I have a single LOOT B card, but no corresponding LOOT 1.) And ADVENTURE PATH 1 card (again, I have an ADVENTURE PATH B, but no corresponding ADVENTRUE PATH 1.)
So... Am I missing two cards? Or were the LOOT and ADVENTURE PATH cards added into expansions after the original RotRL set and I'm good as-is?
First the good news: you're not missing those cards. Also, you didn't add an expansion.
The "B" cards are the "B"ase set - that's what you need to start playing the Perils of the Lost Coast adventure. That's kind of a prolog to the main adventure, Rise of the Runelords.
The "1" cards are first deck of the adventure proper. You should take all these out and stick them back in the Burnt Offerings deck box until you've finished Perils.
As for those two cards you're wondering about: Loot B was a misprint. It should have been Loot 1. Stick it in the box with the other "1" cards.
There's only one Adventure Path card, it comes in the Base set and tells you how the 6 adventures fit together to form the adventure path (adventure 1 is packaged like an expansion but is included in the big box, adventures 2-6 are sold separately).
Going forward: each product has a card list you can download from the corresponding product page. (For example, the Rise of the Runelords Base Set.)
Thank you both for all that. Game on...