The organizations listed below are not a comprehensive list,
​but they are good places to get started in your own research!
WABIDA
The Washington State Branch of International Dyslexia Association (WABIDA) not only has great information on their website on dyslexia, but also hosts a lecture series on various topics pertinent to students with dyslexia such as effective ways to teach writing, dyslexia and ADHD,  dysgraphia and dyslexia, and more!
IDA
The International Dyslexia Association (IDA) has a wealth of information.  Especially useful to parents are the IDA fact sheets, but other resources include research, conferences, literature, and much more.
LEARNING ALLY
Learning Ally is a non-profit organization that was started to help blind, visually impaired, and dyslexic students have access to audio books.  The website has wonderful resources beyond just the audio books and is definitely worth checking out.
1 IN 5
1 in 5 is actually a page on the Learning Ally website ("I am  one of the 1 in 5 kids who have dyslexia").  Parents and kids can listen to other kid's experiences (via youtube videos) and  learn for themselves how to be self-advocates, tech tips, and ways to connect with other kids like them.
DYSLEXIC ADVANTAGE
Dyslexic Advantage is a website listing resources, research, and blog community.  Topics include "mind strengths" of people with dyslexia (good at making connections, seeing the big picture, spatial imaging, etc.) I recommend the podcasts! 
WFR FACEBOOK
Wired for Reading® (WFR) Facebook page has lots of interesting articles to keep you up to date on latest research findings, study participation opportunities, and interesting articles! 

LD Advisory.com
For families looking at the transition to college