Our experience has been that the homebrewing community is very generous with their time and willingness to share knowledge. We have picked up quite a few things along the way and no doubt there will be many more.
Links to some of those that have helped us, or useful information, is detailed below.
HomeBrewBuilder. All our new kit has been bought from the very helpful Mr Lard at Home Brew Builder.
Murphy & Sons. The only place to go to get your tapwater tested and get bespoke advice on treating water depending on what you are brewing.
Craft Brewing Association. Essential source of knowledge and a great way to find other brewers in your area.
Corfe Castle Brewery. Great Beer and much appreciated assistance from Steve Miller who gave us an invaluable tour for a day.
Home-Brew-Shop. Run great one day introductory courses for all levels.
Beer Smith. The only brewing software anyone could ever need. The podcasts and weekly newsletters are useful too.