http://wiki.teamliquid.net/starcraft/Technology_tree
http://wiki.teamliquid.net/starcraft/Technology_tree/Protoss_technology_tree
http://wiki.teamliquid.net/starcraft/Technology_tree/Terran_technology_tree
http://wiki.teamliquid.net/starcraft/Technology_tree/Zerg_technology_tree
Watch/Learn/Practice:
Best Recommendations For Learning BW
https://us.battle.net/forums/en/starcraft/topic/20758677386
Goodies for beginners
https://us.battle.net/forums/en/starcraft/topic/20758697366
First time SC player
https://us.battle.net/forums/en/starcraft/topic/20758886884
Community:
http://www.teamliquid.net/forum/bw-tournaments/532648-coach-pupil-league-season-2-cpl2
http://www.teamliquid.net/forum/bw-strategy/519225-the-coach-corner
Advanced:
http://www.teamliquid.net/forum/brood-war/522793-translated-pro-videos-coordination-thread
http://www.teamliquid.net/forum/bw-strategy/481389-build-orders-and-strategies-by-scan
http://www.teamliquid.net/forum/bw-strategy/524270-tvz-1-1-1-opening-by-scan
http://www.teamliquid.net/forum/bw-strategy/510069-2016-heros-zvp-build
Ladder & Match:
https://starlog.gg/en/leaderboard
http://www.teamliquid.net/forum/bw-tournaments/532980-have-at-you-14-april-22nd-200-online-open
http://www.teamliquid.net/forum/bw-tournaments/531965-bsl-4-pro-and-chobo-leagues-start
Enjoy :-)