BBC Learn Welsh : Grammar guide
Ann Jones (2004)
A grammar guide which includes a glossary of grammar terms, an introduction to the alphabet and pronunciation, lists of everyday idioms / phrases and vocabulary guides for topics such as the weather, greetings, food, work, family etc.
This book also features a beginners section and an intermediate/higher section for learners to progress to.
In English and Welsh.
WEL GRAM 6 Open access