You can read about the William and Kate story in an easy reader book (I have them at Imagine). These are books about famous people, or stories, or about places: with easier English for language students.
If you look on the back of the book you can see the level and choose what is good for you.
Reading is a great way to expand your word-power and to enjoy English.
A friend writes a blog about easy reader books - she posts about a new book almost every day! You can use her blog to find out about different books. Please check the blog!