Hi, thanks for the question! There are no dietary requirements for being pagan or a witch. Some parts of being a Wiccan initiate are very secret, but I have Initiated Wiccan friends and they always eat the same kind of foods as me and I haven’t any particular restrictions. I can understand why you ask though, many religions do have dietary rules, for Jewish folks they keep Kosher, and there are some meats Hindus aren’t supposed to eat, Muslims keep Hallal, and Catholics don’t eat meat on Friday. Some pagans make specific vows not to eat certain things as a devotional act. If you want to be vegetarian or vegan and be a pagan and/or witch you can, though certain gods of hunting, milk or honey might not suit a vegan or vegetarian in their devotions.
I don’t really read ebooks. I’m a fan of the real thing. However, I do know thatspiritscraft posts PDFs of free books on witchcraft and paganism so you might want to check that out.
Yes there are usually different free Kindle books on promotion a few a week. I can’t say they are all excellent books, but free is a good start. I also find cool stuff that is always free.
I’d suggest you start with Gospel of Aradia by Charles Leland and Bypaths in Sicilyby Eliza Heaton, both with lots about Italian folk magic and witchcraft. And then for Celtic folk magic, I suggest Secret Commonwealth of Elves by Rev Kirk, Fairy Faith in the Celtic Countries by Wentz, and Visions and Beliefs in the West of Ireland by Lady Gregory, and Ancient Legends, Mystic Charms and Superstitions of Ireland by Lady Wilde.
Between all these you can find a variety of spells, witch and folk magic practices, and fairy legends to get you a head start. There are of course interesting texts for many other areas. This is just a few to get you started.
First off, how brave of you to admit this is what you want and to jump in and ask for help! I am glad you asked me really. Some of the best books and sites for this kinda thing get a terrible rap because in general people can be judgmental about these kind of dreams and put down the authors. Also editors often put in caveated and warnings due to their moralizing and one must separate the wheat from the chaff in the text. One such witch is Fiona Horne. She has wonderful books and a website on this kinda thing. But in her books the publisher has added insets and text boxes that directly contradict her opinion. Fiona Horne is secular witch who does not follow the rede. Yet the editor appears to have thrown the Lord and Lady and rede into sidebars in her book just to appease their usual readership. If you are willing to ignore that I think her books and website are wonderful for glamour magic and sexy magic. I also love the Good Spell Book by Gilliam Kemp and A Crone’s Book of Words by Valerie Worth, both also secular and about witchcraft focused on making things how you want them. I wish I had more websites and free resources for you, but most of these books can be had incredibly cheap at least.