I found on german amazon site: Acol Bridge Lessons For Beginners (English Edition)1. Oktober 2012, Louise Smith Acol Bridge Flipper (Master Bridge (Cassell))12. Februar 2004, Ron Klinger and some german texts. Klingers booklet ist just a listing of bidding lines, more of a memory help. If you want to play 4-Card-Acol, users in my club say it's very easy, no weak2 which means all bidding of 2something is strong. You need to decide wether you play NT strong or weak or mix both depending on vulnerability. Good luck!
