When it comes to direct sales, there are many different books out there for you to read. Unfortunately, due to the niche of this industry, a lot of them are not available in your local library (at least, not in my local library) so if you want to read them, you need to purchase. If you are looking for ideas of which books to borrow, I advise you to look into these ones.
All Sorts of Training by Deb Bixler – more than just books!
If you are looking for a general book on advertising, you may be interested in checking out this book by Bill Glazer called “Outrageous Advertising”. This one you may be able to find at your local library as that is where I got it from. Read my full review of this book at my post reviewing it. Book review of “Outrageous Advertising”
Don’t forget, I have a series of books for you to purchase on Kindle! You can see what they are about and with links to purchase at this blog post – Check out my ebooks!