Note that posts marked unofficial are those made by players as opposed to the developers of the game, which are the official posts. Any info we post is the best available, so will be as accurate as anyone can get.
Here is the Player Guide to Boss Drops - Unofficial.--> Guide-Legendary-Elite-Gear-Distribution
Pet Farming Guide! - Unofficial --> Egg-Farming-Guide
Here's the bug report forum on STS. Lots of answers to questions here.
Mix of official and unofficial info --> AL-Technical-Issues-and-Bugs