Tactiek

MCR

• MCR - Aspects of mahjong strategy (by Hendrik Leth)

• MCR game (by Petter Ranefall)

• World Class Mahjong (by Hai Matsune)

• MCR cheat sheet for Riichi players (by JCarlson)

• MCR scoring elements starter set

Riichi

• Wait trainer (by Luc, LLN)

• Tile efficiency trainer (euophrys)

• Score trainer 

• Riichi book I (by Daina Chiba)

• WWYD's for intermediate players (by Krabman)

• WWYD's (JP)

• M-League Review Hub, by Noah from Berlin Mahjong Club

• Instruction to Tenhou

• Paifu print sheet to record irl game logs (by Vincent)

• Riichi Mahjong Strategy (by Nemata & Fukuchi Makoto)

• Statistical Mahjong Strategy

• Flow Book I

• Osamuko's Mahjong Blog
• The Hopeless Girl on the Path of Houou
• Tri Nitro Tiles RCR Stratégie
• Mahjong Strategy Guides and Books