Northwest Family Services
Offers an online NFP course. This includes regular follow-ups with certified NFP instructors from Northwest Family Services.
NWFS

Catholic Marriage Prep 
You will receive personalized one-on-one support from a certified NFP Provider. Mary-Rose Verret is the main instructor for CMP's couples who would like to take this Online NFP Class. Mary Rose will be available to answer questions and provide personalized feedback. The timeline for completion is about a month, although you are given four (4) months of access to the online course.  
Catholic Marriage Prep

Couple to Couple League
Learn NFP through CCL classes or the CCL Home Study Course. CCL sells fertility charting software, CyclePRO®.  With membership, couples receive the Family Foundations magazine. This site also offers trainings for couples interested in becoming a CCL Teaching couple or Promoter.
Couple to Couple League

Natural Family Planning International
NFP International offers instruction through its downloadable in-depth manual, Natural Family Planning: The Complete Approach which teaches ecological breastfeeding as well as systematic NFP. Downloadable charts and many interesting articles and resources are also available.
Natural Family Planning International

The Billings Ovulation Method™ is used by millions of women around the world. It was developed by Drs John and Evelyn Billings, beginning in 1953, validated by eminent international scientists, and successfully trialed by the World Health Organization. By learning to identify their natural signals of fertility, women can use the Method, consisting of the application of four common sense guidelines, to become pregnant or avoid pregnancy and to safeguard their reproductive health.   

Billings Ovulation Method

The book, “The Billings Method” by Dr. Evelyn Billings is available in most libraries. However, the help of an accredited teacher is indispensable especially at times of irregular cycles when ovulation is delayed: breastfeeding, post-partum, pre-menopause, recovering from extreme athletic and emotional stress. 

BOMA-USA delivers effective, individualized and evidence-based fertility education, offering women and couples a natural and proven method to monitor fertility, improve health and encourage stronger families.
BOMA

 
Creighton Model FertilityCareTM System
The Pope Paul VI Institute encourages participants to attend trainings to learn more about the Creighton Model FertilityCareTM System. This model is also offered through the FertilityCare Center of America’s website.
www.creightonmodel.com
 

Family of the Americas
Nature’s Method interactive CD-ROM and the Love and Fertility book. This book is a beautifully illustrated full color book that introduces the Ovulation Method of Natural Family Planning in an easy to understand format. Provides practical information along with the latest scientific research and statistical evaluations from around the world. Includes the six month charting kit. Also available in Spanish and many other languages.
www.familyplanning.net
 

Marquette Model (Marquette University)
This very informative site includes an instruction manual, online tracking chart, downloadable forms, forums and answers to many questions about NFP. This method is a hybrid protocol which involves a monitor and strips.
http://nfp.marquette.edu/
 

The Ovulation Method
An online video is available for viewing. It teaches the ovulation method and is also for sale on DVD for $1. Downloadable tracking charts are available.
www.ovulationmethod.org
 

One More Soul
This site focuses on fostering God’s plan for love, marriage, and procreation. Audio clips and interesting information about NFP is available. Informative topics are available to engaged, newly married and married for years couples.
One More Soul NFP

Diocesan Development Program for NFP, USCCB
The USCCB has many articles, documents, links and resources available about NFP. Excerpts from Church documents include chastity, children as gifts, conjugal love, contraception/sterilization & abortion, family, human sexuality, life as a gift from God, marriage as a sacrament and many other articles.
USCCB NFP