thearialligraphyproject:bookboon // for accounting, business, economics & finance, engineering,
thearialligraphyproject:bookboon // for accounting, business, economics & finance, engineering, IT & programming, languages, marketing & law, natural sciences, statistics & mathematics (+ career & study advice, strategy & management)booksee // for arts & photography, biographies & memoirs, business & investing, computers & internet, cooking, entertainment, health, history, home, law, literature & fiction, medicine, references, religion, science, sports, travel, and other categoriesboundless // for accounting, algebra, art history, biology, business, calculus, chemistry, communications, computer science, economics, education, finance, management, marketing, microbiology, music, physics, physiology, political science, psychology, sociology, statistics, U.S. history, world history, writingcalifornia learning resource network // for mathematics, science, historyck-12 // for elementary math, arithmetic, measurement, algebra, geometry, probability, statistics, trigonometry, analysis, calculus, earth science, life science, physical science, biology, chemistry, physics, sat exam prep, engineering, technology, astronomy, english, historycollege open textbook // for anthropology & archeology, art, biology & genetics, business, chemistry, computer science, economics, engineering & electronics, english & composition, health & nursing, history, languages & communication, law, literature, math, music, philosophy, physics, political science, psychology, science, sociology, statistics & probabilityebooklobby // for arts & photography, biographies & memoirs, business, computers & internet, cooking, entertainment, health, home & garden, law, literature & fiction, sports, travelfreemathbooks // for algebra, geometry, trigonometry, calculus, applied math, probability, analysis, statistics, and other sub-categories of mathematicsglobal text project // for business, computing, education, health, science, social sciencesopenstax cnx // for arts, business, humanities, mathematics & statistics, science & technology, social sciencesopen culture // for art history, biology, business & management, chemistry, classics, computer science & information systems, earth science, economics & finance, education, engineering, history, linguistics, law, mathematics, music, philosophy, physics, political science, psychology, sociologyopen textbook library // for accounting and finance, business, management & marketing, computer science & information systems, economics, general education, humanities & language, law, mathematics & statistics, natural & physical sciences, social sciencestextbook revolution // for biology, business & management, chemistry, computer science & technology, earth sciences, economics, engineering, environment, ESL, health sciences & medical, mathematics, physics, society and social sciences, sociology, world history+ bonusbookstacks // popular classics**If you know other helpful sites, please send me a message so I can add it to the list! -- source link