If you are wondering where everything went, it has been collected in a single 110,000 word book in PDF form. You can just download it and read it or print it out or whatever. But please don't sell it (not that anyone would buy it).
The book contains a lot of information for active users, but bear in mind that I don't recommend anything in it. Also: most of the information is out of date. It does, however, contain a lot of advice -- especially for the friends and family of active users.
Having written about heroin and other opioids for a couple of decades, there is one thing that I think that I know: methadone treatment should be more widely available. I mean that in a physical as well as cultural sense. Too many people think that it is just trading one addiction for another. That's not really true. But even if it were, so what? Methadone saves lives. It allows people who have been harmed by the negative effects of opioid addiction to live full lives.
I've observed all the major addiction treatments. By and large, they are all about as good as nothing at all. Methadone is different. It works. And it is painless. It allows you to change your life pretty much overnight.
With that in mind, if you are addicted to heroin or any other opioid, you should really look into a methadone treatment program. It's usually as easy as typing "methadone treatment" into Google Maps.
The Substance Abuse and Mental Health Services Administration has a great listing of Opioid Treatment Programs. One thing about this list: it contains all kinds of programs -- not just methadone programs.
One thing I don't recommend to anyone is any program that is expensive (more than a few hundred dollars) or that uses the "12 steps." (Many methadone clinics still encourage their clients to go to these meetings, but they aren't required.)