Reference books, whether in paper or online, can give background and depth, as well as definitions, basic knowledge, scope of the topic area, important people and statistics, and some citations to get you started.
This link opens in a new windowSubjects: MANY
Description: General e-book collection from Gale Cengage Learning containing full text.
Contents: eBooks; Encyclopedias.
This link opens in a new windowSubjects: MANY
Description: General encyclopedia containing full text.
Contents: E-books; Encyclopedias