I love this book, Yes some of the ingredients seem a bit odd at first but I use sugar instead of the agarve nectar mentioned in some of the recipes and have found out which alternatives to use:-
Vegetable shortening is 'TREX' available in all supermarkets.
Canola oil is 'RAPESEED' oil available in supermarkets.
ENER-G egg replacer powder can be bought at most health food shops and in some freefrom sections in shops.
The flour mix used in the book consists of rice flour, potato starch and tapioca flour which must be mixed in the correct proportions BUT I have never used this flour mix and my cakes have been great! I use Doves gluten free white bread flour and it gave fab results. The Blueberry boy bait was so good nobody believed it was gluten free and the Vanilla cupcakes with vanilla frosting were divine! they were the best cake I had had since becoming a coeliac. You will need to get an american sized measuring cup (mine is pampered chef) and a muffin size tray and papercases if you want to make cupcakes.
I mix all my cakes either by hand with a plastic balloon whisk/ spoon or my cheap hand mixer from argos, You do not need a stand mixer.
Hope this helps.