Just a few.
Scientific: https://scienceofparkinsons.com/ May be more than you want to know, but he's thorough.
Reflective (my life with PD): http://parkinsons.stanford.edu/pdblogs.html
A good collection, including institutional blogs (good for research updates): https://www.healthline.com/health/parkinsons/best-blogs-of-the-year#1
How can you keep track of them? You can bookmark them, and go check them out every few weeks.
Or you can use a Reader that collects blog posts and tells you when there are new ones - I use Feedly. All I have to do is open my Feedly account to see who has new posts. If you'd like to use Feedly (it's free), see this post.
Happy reading!
