Honestly it depends on what your direction lies. Personally I am not a fan of goddess based books, but I don't follow a goddess path at all.

I'm helping to train my bestie at the moment (with the help of my other bestie), I've got her reading history books including books on mythology, within the areas of Celtic, Greek, Roman and Norse. This will give her the basis she needs to start working on how she personally connects with deity. I know she has a huge Celtic bent, but I want her to understand how other cultures work. She already has the Indian and Asian deity knowledge.

Once she has a good grounding and understanding of deity, then we will start on the basics including wheel of the year, working with the moon, protection and grounding. We are keeping her away from any spellwork until she feels she is ready.