Chastity and Sex
Chastity Project - short articles and videos on common questions
Theology of the Body Institute on YouTube

Pornography
Fight the New Drug - Research 
Strive 21 - Helping men find freedom from porn addiction
Covenant Eyes - Internet accountability

Gender and Sexuality
Person and Identity Project - Gender Identity Resources
Testimony of Chloe Cole - Gender Transitioning
The Third Way - Documentary on Homosexuality and the Catholic Church

Family and Openness to Life
Natural Family Planning
The Case Against Contraception and for Natural Family Planning - Jason Evert (video)
Being Open to Life - The Problem with Contraception - Christopher West (video)