Hi Chococake,
The ideal submission length is a 1 000 words. You will be acknowledged as the contributor, though your contribution will undergo language editing with the rest of the book. Please note that contributors don't receive any financial compensations for their contributions.
In your contribution you can write about, but are not 100% restricted to, the following topics:
- your experience of 'PhD-ing' while working full-time outside of academia
- the main challenges you experienced while in this situation
- steps you took to overcome these difficulties
- tips you can give to other PhD candidates in a similar situation to make 'PhD-ing' easier.
In your email, please state the country you are currently living in, as well as your name (it could be a pen name).
Feel free to drop me an email (available on my website http://survivingyourphd.strikingly.com/) if you have more questions, or expand on this post.