Chimney is a definite - Weber brand would be best. Also it might be good to have at least two of them. I think most guys on this forum have at least two. Maverick ET732 is also a good idea. It comes in handy given the fact that the lid therm on the WSM is not very accurate. Plus you can monitor the temp from a distance which helps a lot when you're trying to multi-task or just chill and watch the game. As far as coals, blue Kingsford is a good place to start. I used it at first. I no longer use it now but I would still recommend it for starting out. From there your charcoal preferences may evolve and you might want to try other brands. Those other brands may not burn the same as Kingsford, so its a good idea to hone your skills on Kingsford to have a good baseline reference. As far as rib racks - that one is kinda tricky. I went though 3 different racks before I settled on a fouth one that I liked. It depends on how you like to cook your ribs. I like to cook mine untrimmed so I had to find one that would support that. Rib racks are all about trial and error, kinda like the charcoal. Good luck and good smokin'.