Below are a great selection of books from OSHA. These may be 20 – 100 pages and include items such as guides on what they require for training.
Note – I have included the pdf version, but if you go to the OSHA website, they also have MOBI and EPUB.
Here is a great reference card – great for training, posting at or near your Chemical SDS Binder (you have one of those, right?), etc.
This comes from OSHA, so it is a good idea to have their materials on hand – especially if they show up!
OSHA has a nice guide on what they recommend for Construction Safety. This guide goes over most aspects that the safety progression considers important.