Here are some websites you can visit to learn more about ME/CFS. I recommend Reddit for more personal experiences and in depth resources.
<https://en.m.wikipedia.org/wiki/Myalgic_encephalomyelitis/chronic_fatigue_syndrome>
<https://www.reddit.com/r/cfs/wiki/index/>
<https://www.reddit.com/r/cfs/comments/1go6vjp/mod_post_new_members_read_these_faqs_before/>