The traditional books are enough to differentiate between remedies for most homeopathy at home. They are inexpensive so it is handy to buy the books listed below. However, most homeopathy books can be found on line. The exception is Phatak’s materia medica. He has written excellent short and pithy descriptions of physical symptoms. But, his book is not on line.
Descriptions of major remedies are in materia medica. Listed by author’s name.
These books must be read on line.
William Boericke http://www.homeoint.org/books/boericmm/index.htm
libraries on many homeopathic subject
Books are briefly described and can be downloaded on your computer.