As a non Arabic speaking revert to Islam, this has become a huge help. It's incredibly informative whereby on some pages, the footnotes may take more room than the translated lines of The Quran itself (got to love those footnotes!).
Even after you learn Arabic with English being your mother tongue I imagine this would still be used for understanding due to the depth of The Quran and the beauty and complexity of the Arabic language.
A really useful, well used book which I'm sure I will keep going back to.
It maybe alot of information to take in as a non Muslim, as a first Quran, but if you are intrigued, go for it! :)