You can follow me on Twitter at https://twitter.com/bjjpressure
Blogs
http://www.grapplearts.com/articles/
Stephan Kesting has been putting out great articles and YouTube videos for many years. For most any question you could have about BJJ, he has an answer on his site.
http://www.jiujitsubrotherhood.com/
Nic Gregoriades is a black belt under Roger Gracie and has a lot of content that focuses on principles over techniques, and also has good content on breathing for BJJ. I read and enjoyed his book The Black Belt Blueprint: An Intelligent Approach to Brazilian Jiu Jitsu
http://bishopbjj.com/
Bishop BJJ is written by black belts Tyler and Jena Bishop and has a lot of interesting statistical breakdowns of what happened in BJJ matches.
Here are some other blogs that I have enjoyed:
http://www.bjjcanvas.com/
http://www.ojimas.com/blog
http://www.innerbjj.com/
http://fixyourjiujitsu.com/
http://scienceofskill.com
These two are aggregator websites that link to a lot of different content from around the web.
http://www.bjjee.com/
https://www.jiujitsutimes.com/
Fight breakdowns
A ‘breakdown’ is when someone reviews a fight or match and explains to you what’s happening during the match. This can often be more informative than instructionals because you’re watching footage of someone performing the technique live against a resisting opponent. Breakdowns also tend to go much more into the strategy and tactics that cause a technique to work, rather than just how to do the technique.
https://www.youtube.com/user/BJJSCOUT
BJJScout has a lot of very highly detailed videos that break down the games of various BJJ and MMA fighters. I highly recommended studying his videos multiple times.
http://fightland.vice.com/author/jack-slack
http://bleacherreport.com/users/2072255-jack-slack
http://www.sbnation.com/users/Jack%20Slack/blog
http://www.fightsgoneby.com/
https://www.youtube.com/channel/UCl3zMJRgefZm7ELHkIp-xDA/videos
On Fightland, 2 or 3 times a week, Jack Slack breaks down MMA fight strategy and techniques with a very high level of detail and lots of animated gifs to illustrate his points. You can also find more of old work on Bloody Elbow, Bleacher Report, and his own personal blog.
https://www.youtube.com/user/tristargymcanada
Firas Zahabi, trainer of Georges St. Pierre and Rory MacDonald, has a YouTube channel where he posts a lot of techniques as well as breaks down MMA fights and some street fights.
https://www.youtube.com/user/LawrenceKenshin/videos
Lawrence Kenshin does great striking breakdowns of MMA, kickboxing, boxing, and Muay Thai fights
Other YouTube channels that do good breakdowns:
https://www.youtube.com/user/ostapbjj/videos
https://www.youtube.com/user/BJJBreakdown/videos
https://www.youtube.com/user/BreaJiuJitsu/videos
https://www.youtube.com/user/GracieBreakdown/videos
https://www.youtube.com/channel/UCMmHA5CN1V2L2Hg36uj-iWA/videos [wrestlejitsu]
https://www.youtube.com/user/GambleDub/videos
https://www.youtube.com/user/Cobrinhabjj/videos See the “After-Thoughts” series where people at Cobrinha’s school video their rolls and break down what happened during them.
https://www.youtube.com/channel/UCxZbaI-fwk8GC4-ZrAeLbwA/videos [Brendan Dorman]
https://www.youtube.com/channel/UC7hsphyOfhPw2uq2k2ly7UQ/videos [Espen Mathiesen]
https://www.youtube.com/user/InnerBJJ/videos
https://www.youtube.com/user/WEElani/videos [Miika Rannikko]
https://www.youtube.com/user/FixYourJiuJitsu/videos
Podcasts
I have a long car commute every day, so I listen to podcasts while I drive. Here are some favorites:
Just the Gi Top
Grappling Central
Take it Uneasy
GrappleArts Radio
BJJ Brick
Forums
https://www.reddit.com/r/bjj
My user page is https://www.reddit.com/user/bjjpressure
http://www.mixedmartialarts.com/
http://forums.sherdog.com/
Strength/Conditioning/Nutrition
http://www.8weeksout.com/
Joel Jamieson is a well-known S&C coach for MMA fighters who has a lot of interesting thoughts on training for maximizing energy during a fight.
http://www.precisionnutrition.com/
Precision Nutrition was created by John Berardi. Their content is open minded, evidence-based, and focuses on having a healthy relationship with food.
Favorites:
http://www.biggersmallerbigger.com/
http://www.precisionnutrition.com/intermittent-fasting
http://www.precisionnutrition.com/paleo-diet
http://www.leangains.com/
http://bradpilon.com/
Martin Berkhan (LeanGains) and Brad Pilon (Eat Stop Eat) are probably two of the best known proponents of intermittent fasting. Pilon’s book Eat Stop Eat is highly recommended.
http://www.marksdailyapple.com/
Mark Sisson is one of the leading voices of the Paleo (he calls it Primal) movement. He provides a lot of scientific references for his assertions and ha a lot of great content on healthy living, eating, and exercising.
Supplements
Of course, correct training and diet are much more important and beneficial than supplements. And most supplements are a total waste of money, in the sense that they’re overpriced, the ingredients on the label are useless and/or dangerous, and the pills inside don’t match the ingredients on the label.
But there are some that are useful and relatively inexpensive. For more information, check out these links:
Examine.com is a very thorough site that breaks down the evidence behind various nutritional supplements. This is a must-see site if you want to decide whether you want to try taking supplements like creatine.
https://labdoor.com/rankings/
Independent rankings of the potency and purity of various supplements like creatine, fish oil, probiotics, etc.
http://suppversity.blogspot.com/
http://ergo-log.com/
These two blogs review new studies regarding exercise, nutrition, supplementation almost daily. They’re best suited for readers who are willing to read more scientific jargon.