U.S.A. Learns

U.S.A. Learns is a free English course developed by the U.S. Department of Education and by the California Department of Education. The project was designed for adults (immigants) who want to learn or improve their skills. There are three levels available: beginning, low-intermediate and intermediate. You can see videos, listen to the records and do online activities. Learners can register to have their scores and progress saved. Teachers can also register to create a class and follow their students work. But if you prefer you can use the site without registering. Start your course right now to strengthen your language abilities. Link

Oxford Advanced Dictionary

Now we can count on Oxford Advanced Learner's Dictionary (OALD) to expand our vocabulary. OALD is an extremely good dictionary with both British and American pronunciation. You can browse some wordlists like the Oxford 3000 (the most important), Academic wordlist or through pictures. The entries with pictures often have more information about the theme if you enlarge the picture. Excellent option for reference and study. Look up a word right now !!! Link