I think any updated psychology textbook will give you a good groundwork, although probably boring. Vlogbrothers on Youtube have a Crash Course on Psychology.
Some books I have read are more pop psychology as opposed to traditional (and usually more scientific) psychology, but I would still recommend them. Some are even in the self-help area, but were useful to me:
Man's Search for Meaning, Viktor Frankl
Outliers, Malcolm Gladwell
The Seven Habits of Highly Successful People, Stephen Covey
Flow, Mihaly Csikszentmihalyi (on my to read)
Freakonomics, Steven Levitt and Stephen Lubner (not really psychology, but an interesting book that I recently read)
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I think any updated psychology textbook will give you a good groundwork, although probably boring. Vlogbrothers on Youtube have a Crash Course on Psychology.
Some books I have read are more pop psychology as opposed to traditional (and usually more scientific) psychology, but I would still recommend them. Some are even in the self-help area, but were useful to me: