GRAMMAR LEARNING WITH INTERACTIVE EXERCISES

Flo-joe PET: Grammar practice (+Vocabulary Practice and Reading, Writing and Speaking Practice Tests) for the Cambridge exams. British English. Level B1

BBC Learning English. Grammar Quizzes. British English. Levels A2-B1+

Longman Online Dictionary. Grammar Exercises: 

Intermediate Grammar (Levels B1-B2)

Advanced Grammar (Levels C1-C2)

         Oxford Practice Grammar Student's Site.

             Basic (A1-A2)

             Intermediate (B1-B2)

             Advanced (C1-C2)

GRAMMAR LEARNING WITH EXPLANATION TEXTS (AND INTERACTIVE EXERCISES)

British Council. Learn English. English Grammar Grammar explanation texts and interactive exercises, plus a grammar reference. British English. Levels A1-B2. 

BBC Learning English 

BBC Learning English Grammar Reference. Grammar explanation texts and links to further practice with video and interactive activities. British English: 

Basic Grammar Reference Levels A1-A2

Intermediate Grammar Reference Levels A2-B1

Upper Intermediate Reference Levels B1+ B2

Towards Advanced Reference Levels B2-B2+

English Current. 

Gramática Inglesa para estudiantes españoles

GRAMMAR LEARNING WITH AUDIO (AND INTERACTIVE EXERCISES)

BBC Learning English. 6 Minute Grammar: Explanations in audio, with links to the grammar reference. British English. 

Basic Grammar: Levels A1-A2. 

Intermediate Grammar: Levels A2-B1.

GRAMMAR LEARNING WITH VIDEO (AND INTERACTIVE ACTIVITIES)

British Council. Learn English Teens. Grammar. Explanations with video and written text, with plenty of interactive practice exercises and downloadables. British English. Levels A1-A2 and B1-B2

British Council Learn English. Word on The Street. A video series for learning grammar and culture. With transcript, downloadables and interactive exercises. British English. Levels B1-B2. 

BBC Learning English. The Grammar Gameshow.  A video collection dealing with post-intermediate grammar in the format of a gameshow, with explanation texts and interactive quizzes. British English. Levels B1+- B2

BBC Learning English. English in a Minute. A video collection with a brief explanation of a grammar point (or vocabulary issue), explanation text, transcript, a quiz and downloadables. British English. Levels B1+- B2

BBC Learning English. Learner's questions. A video collection in which learner's questions about grammar (and vocabulary and pronunciation) are answered. British English. Levels A2-B2

BBC English Masterclass A video series on advanced grammar. British English. Levels B2-C2

Macmillan Dictionary. Real Grammar: a collection of videos dealing with doubts in grammar usage, presented by the Editor-in-Chief of the Macmillan Dictionary. It includes a dowloadable transcript of the video and links to articles and the Macmillan Dictionary blog. British English. Levels B2-C2

FREE GRAMMAR REFERENCES FROM DICTIONARIES

Cambridge Dictionary Grammar Explanation texts. Mixed Levels. 

Collins Dictionary. Easy Learning Grammar. Explanation texts and Grammar Patterns. Mixed Levels.