Some great lessons here to help you learn how to read music.
I think it is best if you do this on a desktop computer rather than the small screen of the phone. iPad might be okay.

When you go to the website you'll see some. Just start from the top.
If you start the lessons, you'll see that the top of the page is dedicated to images of music and notes etc.

The second half of the page is text. By clicking on each sentence in order-you'll learn something about music. The images in the first part of the screen will change to show you what you're learning.
At the end of each section, click BACK in your browser to bet to the lesson the lesson list and choose another lesson.     GO THERE NOW!