The Diet Doctor website is packed full of useful information and it is a great place to start. There is a lot of free content without having to subscribe.
The Public Health Collaboration (PHC) is an organisation dedicated to informing and implementing healthy decisions for better public health. The PHC website is a mine of useful information.
Ditchthecarbs.com. This site has a lot of free low carb recipe ideas.
Diabetes.co.uk. There is a mine of useful information on this site even if you are not diabetic. The Prediabetes section is well worth a look, as the same principles apply to most of us even if we are not pre-diabetic.
Robert Lustig .com. Prof. Robert Lustig is a a practising Paediatric Endocrinologist and a leading expert on the low carb lifestyle. There are a number of useful links to further resources.