Book Categories 100
- nonfiction 155
- science 60
- history 53
- politics 37
- economics 36
- business 36
- philosophy 20
- finance 20
- physics 17
- self-help 16
- technology 15
- psychology 14
- biology 11
- mathematics 9
- fiction 9
- management 9
- classics 8
- biography 8
- leadership 7
- medicine 7
- literature 6
- productivity 6
- money 6
- nature 6
- engineering 5
- artificial-intelligence 5
- entrepreneurship 5
- environment 5
- sociology 5
- chemistry 5
- genetics 4
- health 4
- quantum-mechanics 4
- memoir 4
- war 4
- medical 4
- climate-change 4
- energy 4
- reference 4
- american-history 4
- education 3
- computer-science 3
- religion 3
- astronomy 3
- science-fiction 3
- fantasy 3
- space 3
- personal-finance 3
- evolution 2
- banking 2
- software 2
- futurism 2
- political-science 2
- personal-development 2
- history-of-science 2
- society 2
- sustainability 2
- ecology 2
- true-crime 2
- art 2
- mythology 2
- greek-mythology 2
- american 2
- essays 2
- climate 1
- programming 1
- government 1
- german-literature 1
- video-games 1
- politica-science 1
- geopolitics 1
- complexity 1
- world-history 1
- cultural 1
- humor 1
- nutrition 1
- theology 1
- music 1
- communication 1
- russian-literature 1
- poetry 1
- psycics 1
- psychoanalysis 1
- romance 1
- parenting 1
- family 1
- childrens 1
- animals 1
- natural-history 1
- conspiracy-theories 1
- entrepeneurship 1
- comedy 1
- crime 1
- healthcare 1
- world-war-1 1
- gardening 1
- civil-war 1
- travel 1
- geography 1
- neuroscience 1