LEARN PHONETICS

This page teaches how to pronounce correctly. It has tons of exercises in a fun way.
The site belongs to Cambridge online.Be aware that some activities can take some time to load.I recommend to start with the Phonetic Chart.
Excellent.
http://www.cambridgeenglishonline.com/Phonetics_Focus/

English lessons for intermediate students

A good site to practice and get more knowledge. It has many exercises and it explains in a very easy way.
Check the menu on the side.
http://www.englishpage.com/index.html

BASIC ENGLISH LESSONS

For people who are just starting to learn English, this site can help you with different grammar tips. There are 11 lessons with different exercises.
Recommended.
http://www.learn-english-online.org/