Pirates of the Caribbean is how the complete Penguin Readers series, very well done. The classifications fit very well and reflect the understanding English very well again.
Who easily refresh their English or want to learn English is with Penguin Readers nothing wrong. The lyrics are very well chosen and well understood. Especially helps the question part, at the back of the booklet, in understanding, you should lose the thread but once. If not still hurts him not to go through. In this one questions are asked to read.
For those who want to learn English while I recommend the following reading:
Take a highlighter at hand and highlight the words that they do not know (even the ones you can open from the context) and translate them (preferably with a dictionary, not on the PC).
If you will then write them on index cards your vocabulary grow rapidly.