If what you are really interested is on improving your writing skills., I would advice two roads:
1) Try to look up for a group that shares this interest in your town, a place where you can get a lot of feedback and also contribute to other people's writing. I realize this maybe more suitable for fiction writing, but maybe you can start your own non-fiction writers club.
2) In my case, the book "Writing with power" of Peter Elbow has been an invaluable resource of good practices, and it has helped me to enjoy more of my writings. The thesis of the book is that writing is an iterative process that has two steps:
free writing, the creative step of writing without any regard for rules or structure, and
edition, where structure and style rules help you make sense of what you have written on the first step. Of course the exercise continues with iterations back and forth between this two steps, until you are satisfied or run out of time
.
Hope it helps,
Pat