-If you are unsure on how to handle these early modern books properly, the link provided will give detailed tips on what you should and should not do when it comes to handling these books:
How to Handle Early Modern Books- This is an older link, but it has great information on how handle the books.
Rare Book School- This website offers courses for anyone who wants to learn how to take care of early modern books.
Properly wash your hands before handling books
It is very common to use a book cradle, so they can support the rare books while you are using them. Be sure to carefully lay the book down to prevent any damage to it.
Under no circumstances is eating, drinking, or smoking allowed near the books.
Another thing to note is that you should not pull rare books by the top of their spines. This is an example of how constant mistreatment of the books can cause further damage to it.