3littlefrogs - if you're eating porridge and dried fruit then you will be eating a lot of carbs!
Can I just point out, as a low carber for over 5 years (on and off!) that it's not about eliminating carbs, but reducing the carbs that you get from foods like sugar, potatoes, pasta, bread and rice. Your carb allowance should come from veg and salads, and a limited amount of fruit (rhubarb, strawberries, blueberries and raspberries in particular).
Read the Atkins book if you can, as it does tell you about the theory behind it - it's only the first 2 weeks that are especially strict.
The Charles Clarke book is good, as is India Knight and Neris Thomas' book "The Idiot Proof Diet" which is also a low carb plan - but written by two women who actually used it to lose weight. It also deals with the psychological aspects of eating and weight loss.
And the low carb site mentioned above is good, although it's pretty quite. If you go there, you'll see me - I'm Alison P!