These are some other websites which will be of interest for people who need help in mastering the intricacies of the English language.

A very well-designed and user-friendly website. It's packed with information. Take your time to become familiar with what it offers.

A well-designed site which gives plenty of learning opportunities in a clear, easy-to-follow manner. The rules of grammar are lucidly explained and illustrated.

Every writer of English needs a good dictionary. This is much more besides.