I also highly recommend "Mindfulness in plain English"[0], I wish I found it sooner.
[0]: https://www.amazon.com/Mindfulness-English-Bhante-Henepola-G...
I think this is complete: http://www.urbandharma.org/udharma4/mpe.html
But it's always nice to have something in paperback or Kindle: http://www.amazon.co.uk/Mindfulness-Plain-English-Anniversar...
The printed edition also has a nice afterword.
[1] http://www.amazon.com/Mindfulness-Plain-English-Anniversary-...
I found it incredibly useful.
[1] - https://www.amazon.com/Mindfulness-English-Bhante-Henepola-G...
[2] - http://www.khamkoo.com/uploads/9/0/0/4/9004485/the_heart_of_...