Dear Ken, in terms of specific questions about the practice fasting there is a very good concise summary on one of my personal favorite Old Believer websites:
http://www.churchofthenativity.net/rules.html Before beginning any serious change in personal ascetic practice, it is good to confer with one's spiritual father.
Fr. John Whiteford really has done an incredible job with his compilation of Reader's Services as well as all kinds of links to other resources. He is very helpful and quite prompt about answering specific questions he receives. He has made the riches of the Orthodox liturgical tradition very accessible and may God bless him abundantly for that.
If you prefer a book there are several very good texts out there, including the Unnabreviated Horologion, the Old Orthodox Prayer Book (Old Believer) and the Mega Horologion (Great Book of the Hours) which are all available from St. John of Kronstadt Press,http://www.sjkp.org/
Archbishop Raya's Byzantine Daily Worship, which also contains the Little Hours, Paraklesis, Akathists, etc. and is available from Icon and Book Service
www.iconbook.org [
iconbook.org]
