Hi Frazzalucci, welcome to wrong Planet.
If you wish to learn about meditation as experienced by those on the spectrum you might post here:
General Autism Discussion
Talk about anything that has at least something to do with Autism, Asperger's, ADHD, and life. Other unrelated discussion belongs in the Random Discussion forum.
Or as the subheading suggests; do it in the Random Discussion forum.
All the new posts appear in the sidebar of the home page, so folks will see your topic heading and read from there as well. But, yes as you surmised, you will need to select a forum in which to post your original topics/posts.