I think we're finally at the point where there's enough netwisdom out there for Tyranids in 6th to start compiling a new Tyranid Library article. This isn't all inclusive obviously - just a compilation of useful articles for the aspiring Tyranid general in 6th edition. If you've seen other articles that you've found useful or insightful somewhere that you think other 'nid players would benefit from, by all means drop me an email or a comment below.
Let's start with assault ranges - in case it isn't obvious, Tyranids are an assault army: so here's a handy table that gauges the probability of failing charges, and most importantly: how and when to re-roll. Kudos to Plague Marine over on A Plague Spreads - pity he hasn't been consumed by the hivemind yet ;)
Next up are the always excellent articles from Abusepuppy over on 3++ is the New Black. Quite simply one of the best competitively-focused Tyranid authors out there, with tons to learn in each article, especially if you are a newer player to Tyranids. He can assume a certain baseline level of knowledge though, so these are best read with the rulebook next to you if you are a newer player.
Another Tyranid author to pay attention to is Fritz, from Fritz40k. Fritz is an innovator, and experiments more than most; crucially he doesn't take netwisdom on any unit for granted. The fact he's experimenting with Mawlocs here is just one great example; and IMO, a Tyranid 'rush' list built around mawlocs, ymgarl, and dual flyrants, maybe a doom is definitely a workable list in 6th - mawlocs still aren't great, but they're just the thing for those pesky clumped infantry and their aegis walls:
Mike Brandt, over on Whiskey & 40k, has a soft spot for Tyranids and has been beating up on the NOVA crowd with a psychic choir list that he ultimately took to a 5-1 finish at Battle for Salvation. It deserves mention here both as an example of a "prototypical" psychic choir list and some great play tips, but also because of the innovative Tyranid Psychic Power and Spawn Tracker. This is a godsend, and an approach I will definitely be copying in every game/tournament going forward. I'm a pretty big fan of his list too, as I've liked the Swarmlord+Parasite of Mortrex combo for a long time.
Gritts over on Anvil of War has a nifty article covering missions; terse and to the point, but a good read:
No library article seems complete without a shoutout to hyvemynd over on Synaps3, and the reason for inclusion here is this list reflects the 6th edition need for bigger units to survive overwatch, and protecting your warlord: http://synaps3.blogspot.com/2012/07/1850pts-food-for-thought-and-noming.html
As far as batreps go, jifel1 over on Knighthammer has been posting his latest list thoughts and batreps, piloting his nids to a very respectable finish at Beakycon. Definitely worth reading as he faces some rough lists, and does a good job of capturing his thoughts and approaches:
Slowly getting back in the hobby groove...