I always love victorian recipes. Usually they hardly give any information, because they assume you already know how to cook and basically only give suggestions on ingredients and new things to try. One of my favourite resources is Goode Cookery, with tons of recipes ranging from super yummy to kinda silly! Another great site especially for tea parties is this one, with lots of cake and fingerfood, and this site, which also has a lot of cake recipes.
Of course, after cooking up your delicious food, you want to eat it in the right manner! Here is a site on victorian dinner etiquette!