This Week in Bridge (TWiB) from Adventures in Bridge this week focuses on "Establishing length in dummy".
This provides a solid and useful treatment for all improver levels - captured in just three and a half pages.
So far I have been very impressed with this large collection of reference articles/lessons. It is an American source and 2 over 1 seems to be common but most of the articles are very relevant to our club's players. Readers might enjoy exploring this resource.