Canberra Croquet Club Coaching: International Rules. Introductory and advanced levels. Well organized lessons with defined learning goals, and practice exercises.
Croquet Canada Learning Centre: International Rules. Intermediate level. Various articles by different authors on selected subjects.
Croquet Web: International Rules. Teaching and learning croquet techniques.
Jersey Croquet Club Tips: International Rules. Intermediate level. Fourteen interesting "problems" to solve with diagrams and answers.
Maui Croquet Club Coaching: International Rules. Introductory to advanced levels. Advice, analysis, links, and problems.
Notes from Bob and Ted's Croquet Videos: American Rules. Advanced level. Concise advice on forty topics.
South West Federation of Croquet Clubs: International Rules. Introductory and intermediate levels. Several good articles. Offers advice, coaching, and equipment hire to clubs in Gloucestershire, Avon, Wiltshire, Somerset, Dorset, Devon, Cornwall, Worcester and South Wales.