The British Council website has some excellent reading skills exercises. In Great Britain, they follow the Common European Framework of Reference (CEFR) rather than the Canadian Language Benchmarks (CLBs) as we do here in Canada. I suggest that you start with the activities at Level A1 and move up a level at a time.

I love the English Language Centre Study Zone from the University of Victoria, BC.

You can learn about grammar and do some practice exercises.

They also have some passages that you can read and then answer questions to help you improve your reading skills. There are also a few timed readings that you can try.

The Learning Resources from The Literacy Network is based in California and has some excellent reading activities. All the readings are based on American news stories, so they may not be very interesting to you. I think they are still good reading practice.

If you have young children, you may enjoy Storyline Online, which has actors reading well-known children's picture books.

(I like this website even though my children are too old for picture books.)

Read Theory has online reading activities. Their tag line is A World of reading. Completely Free. Some of the language may be challenging.

Reading ESL has "stories and readings in English for ESL learners". You can choose a topic that you are interested in, including Canada, Canadian History, and the provinces. There are lists of helpful vocabulary and comprehension quizzes.

The Frankfurt International School has put together some good reading exercises for their students. You can work on fill the gap, comprehension (multiple choice), cohesion, speed reading, topic sentences, and irrelevant sentences.

The African Storybook project collects African folktales and stories and puts them online. This is a great website to share with your children or to try yourself. You can also learn more about African culture.

Dreamreader.net offers "free online reading practice for learners". There are sections for easy English, interesting English, fun English, practical English, and academic English. There's also a Facebook page if you're on Facebook.