It's not updated anymore, but explore the blog of One Book at a Time to find some tutorials, mostly of techniques you can use at home, to repair and restore books.
Andria Bobo has a really nice pinterest collection of book repair tutorials. Fair warning, though, pinterest will put all sorts of blocks over the page which reduces the area you can see - unless you have an account.
A school for conservation called West Dean is a beautiful blog even if you have no interest in conservation or book repair, and there are some very good in depth tutorials with detailed photos. There's a tutorial on Japanese stab binding illustrated with a sandwich!
There are some good tutorials over at Temper Products, who are a company that make book binding furniture.
The NorthEast Document Conservation Center has a lot of free preservation resources online, made possible in part by support from the National Endowment for the Humanities.
