Self-Improvement 9,546

Religion & Spirituality 6,662

Cooking & Food 6,362

Health & Fitness 5,669

Family & Relationships 5,248

Psychology 4,402

Science 3,950

New Age 3,484

Literary Criticism 3,092

Military 3,044

Performing Arts 3,010

Sports & Recreations 2,681

Philosophy 2,642

Christian Nonfiction 2,542

Economics 2,222

Medical 2,220

Education 2,174

Nature 2,158

True Crime 2,109

Humor (Nonfiction) 2,081

Travel 1,999

Computer Technology 1,956

Finance 1,914

Reference 1,817

Music 1,807

Art 1,781

Essays 1,722

Women's Studies 1,656

Language Arts 1,611

Foreign Language Study 1,397

Technology 1,310

Study Aids & Workbooks 1,233

Multi-Cultural 1,217

Self Help 1,140

Law 1,094

LGBTQIA+ (Nonfiction) 1,017

Crafts 904

Careers 805

Home Design & Décor 767

Pets 657

Gardening 526

African American Nonfiction 423

Architecture 410

Photography 386

Writing 379

Mathematics 360

Transportation 320

Judaica 309

Games 273

Non-English Nonfiction 254

Management 243

Grammar & Language Usage 202

Engineering 191

Children 175

Marketing & Sales 160

Sales & Marketing 150

Physics 147

Ethics 145

Antiques 128

Entertainment 124

Media Studies 117

Web Publishing 116

Geography 96

Gender Studies 69

Crime 68

Psychiatry 64

Chemistry 61

Professional 45

Current Events 43

Journalism 37

Psychiatry & Psychology 31

Research 27

Human Rights 22

Foreign Language Study - Spanish 21

Foreign Language 20

Text Book 12

Foreign Language Study - French 10

Scholarly 10

Genealogy 10

Analysis 9

Drama 8

Foreign Language Study - German 7

Foreign Language Study - Italian 7

Antiquarian 6

Literature 6

Literary Anthologies 6

Mystery 6

Foreign Language Study - Japanese 5

Foreign Language Study - Russian 5

Outdoor Recreation 5

Recovery 5

Romance 5

Science Fiction 5

Historical Fiction 4

Foreign Language Study - Portuguese 4

Communications 4

Criticism 4

Erotic Literature 4

Fantasy 4

Classic Literature 3

Biology 3

Comic and Graphic Books 3

Report 3

Foreign Language Study - English 3

Foreign Language Study - Arabic 3

Suspense 3

LGBTQIA+ (Fiction) 2

Foreign Language Study - Korean 2

Social Media 2

Inspirational 1

Foreign Language Study - Chinese 1

Foreign Language Study - Vietnamese 1

Child Development 1

Antiques & Collectibles 1

Ancient History 1

Foreign Language Study - Polish 1

Manufacturing 1

Publishing 1

Foreign Language Study - Swedish 1

Feminist 1

Short Stories 1