Honey badger

Hi, So I picked up Mistborn a few months back and jut kept getting the next one until I was out of mistborn books and then picked up more of his work and so far I've only read the mistborn series and stormlights and arcadium, but getting elantris next. I've been reading Sandersons updates on the 3rd book and reading everyone's questions and I've come to realise that there is so much I don't know that a lot of you clearly do, such as there is a third bond smith, I didn't know there was a second one. Hopefully by prowling these pages I'll get a better understanding and any direction people can point me in would be greatly appreciated thank yoh lorne