These are the books I’d recommend for further reading on dealing with difficult people. If you find that you deal with difficult personalities a lot it’s worth spending some time and money on what to do to cope, continue what you love and keep your sanity. Links are affiliates.
These are sites where you’ll find helpful information about types of difficult people and how to understand & communicate with them
Out of the Fog – Information on Personality Disorders
These are some online articles that have further information & suggestions