It's also good to keep in mind that most of our members are in the US, and it is a huge, diverse country with a lot of different climate zones. So one person's experience may be very different than another's, depending upon where they are. Luckily, on the questions about plants there are forums for different areas.
Gardeners learn a lot from books and websites, true. But a wealth of our information is gained by grueling
trial and error. Many many errors, and dead plants to show for it. Since our trials and errors vary from Alaska to Hawaii and Florida, well something that works for one doesn't always work for all.
Composting, however, is done pretty much the same everywhere except where it really freezes. Moisture amounts will vary according to the general humidity, though. See - even that has its variations.