This free video series starts Sunday. Shambhala sponsored. Some well known speakers and interesting topics. Not PTSD focused but plenty on relationships, being present, etc. FWIW.
http://www.shambhalamountainonline.org/?inf_contact_key=6a6d9ed8f7f12ef71b32009a9e6207c03c2e336067eadab8a8d818f1e4d54079