I came across this guide today and thought it was worth sharing. You can down load the “OS X Yosemite Survival Skills Guide” written by Jeff Graber for free. It may not solve all of your OS X Yosemite problems, but it should be a good reference to add to your collection.
This is not a long book, only 17 pages, but does contain some suggestions that might be useful.
See all of my OS X Tips