I am proof positive that one does not have to enter paganism/wicca/witchcraft through crappy pop-wicca inaccurate books. There are plenty of materials that are more accurate available quite affordably. In fact, I post things here on the daily that are better resources and are free. I weed out the total junk as much as I can.
If you look around for educated witches, they will often give stock responses: read mythology, history, and philosophy. This probably annoys new people. They want a book like a pop-wicca paperback that has everything put together for them. However, if one does start with the mythology, history and philosophy, then they will be well equipped to choose good witchcraft books. Because you will then have the knowledge to check the history and mythology and philosophy professed in the “practice” books. If its all wrong, then you can toss that book and seek out another.
Wicca 101 books are not all horrible, but most are. A young person in high school likely has no clue whose advice is correct, and many people recommend books full of bad history and fakelore to these kids. How are they to know who to trust? They don’t. Reading a world mythology book, a world history book and a introduction to philosphy book shall do them no harm and may only delay beginning their practice my a few weeks or months. Then well armed with knowledge they will be able to select better books for introduction to paganism. I stand by my preference to suggest mythology history and philosphy as starting points over 101 Wicca books.