The highly popular guide is also available in hard copy.

Professor Stephen Hawking's popular guide to cosmology has sold more than a million copies in hardback around the world.

Spire Series books are more popular guides to Christian thought and living.

A guide to the characters currently popular with children.

A popular guide to the identification of the principal species.

He is the author of numerous research articles and four books; his popular guide, "On becoming a quant", is widely read.

A Lust for Window Sills, a popular guide to British architecture.

It was a popular mass-market guide for the baffled taxpayer sold in every drugstore and bookshop at tax time.

His knowledge and skill in presentation made him a popular guide.

During the Vancouver 2010 Olympics the blog offered a popular free-event guide.