Server status Twitter account. Essential in the first couple of weeks, now just an easygoing feed of game-related news:
https://www.twitter.com/PoGoServer/
Early hints and tips articles:
The go-to initial hints and tips article for squares (note: incredible Trojan horse for cpu-wasting ads):
http://www.forbes.com/sites/insertcoin/2016/07/09/ten-things-i-wish-i-knew-when-i-started-pokemon-go/
And the follow-up to the above article:
http://www.forbes.com/sites/insertcoin/2016/07/20/ten-more-things-i-wish-i-knew-when-i-started-pokemon-go/
A basic collection of "Mistakes To Avoid" hints written by some squares shortly after the game came out: http://www.techinsider.io/pokemon-go-tips-on-mistakes-to-avoid-2016-7/
A tantalizing, apparently continually updating article about the features in the latest game releases. Unfortunately the site is jam packed with malware: http://www.universityherald.com/articles/42238/20160929/pokemon-go-pokemon-go-updates-pokemon-go-tips-pokemon-go-tricks-pokemon-go-nests-pokemon-go-nest-location-nintendo-nx-niantic-labs.htm#!
Essential reference materials:
The well-known trick to evolving Eevee:
https://www.google.com/amp/investorplace.com/2016/07/pokemon-go-hacks-evolve-eevee/amp/
How to beat Vaporeon in gyms (but also how to play vaporeon in gyms). TL;DR use a grass type, specifically Exeggcutor:
https://www.thrillist.com/news/nation/how-to-beat-vaporeon-in-pokemon-go
List of all the level-up rewards, some of which are lame and some of which are amazing:
http://www.polygon.com/2016/7/19/12227650/pokemon-go-level-rewards
List of all the pokemon including the region-specific:
http://www.telegraph.co.uk/gaming/what-to-play/pokemon-go-full-list-of-original-151-pokemon-available-to-catch/
Essential guide to using the new "Appraise" feature: http://geekandsundry.com/the-internet-has-deciphered-pokemon-gos-appraise-feature/
This is the Max CP Per Level chart which I now consult frequently in order to decide which ones to spend stardust on:
http://pokemongohub.net/pokemon-go-max-cp-per-level-chart/
How to get 100K XP using a lucky egg (prep about 60 evolutions using "Favorites" for easy access, and cut short the animations by quitting and restarting):
Some of my favorite Guides and "Wish I'd Known This" posts from reddit users:
Useful info in this one: Why vaporeons are good, the unconfirmed rumor that the Eevee trick works again if you un-name previous evolved Eevees, basic stuff about how gyms work:
This is the post that managed to correctly explain how to do dodging:
This is the post that managed to correctly explain the hint about using lower cp pokemon to get 500 prestige instead of 200 in leveling up friendly gyms: https://m.reddit.com/r/TheSilphRoad/comments/4sc31y/how_do_i_train_at_a_gym_quickly_gain_prestige/
