Reddit mentions of The PlayBook: An Inside Look at How to Think Like a Professional Trader (Paperback)

Yes, you should be cautious of direct messages, especially if they're trying to sell you a course, coaching, or "use this platform, it's the best, here's my affiliate link".

Some great, free resources for learning day trading:

• James Mason from Transparent Traders (has a great FB group, too): https://www.youtube.com/channel/UC39bOkqMQ3rd0xIFkFZt94w
  
• SMB Capital (watch their free webinar, it's amazing, and they might have the only course over $1,000 that is actually an awesome investment BUT you can absolutely learn enough to get started for free): https://www.youtube.com/user/smbcapital
  
• Beginner Trading on YouTube (lots of free content and they stream every morning from 8am EST until 11-ish AM): https://www.youtube.com/channel/UCIAaNr5U1el0LScWQr8b2Yg
  
• The Boiler Room (Connor is awesome, tons of free content coming from him all the time!): https://www.youtube.com/channel/UCNVxqV5plTxTx3D_57ai5Ow
  
  For some paid resources, I recommend the following books / audiobooks:
  
  
• How to Day Trade for a Living by Andrew Aziz: https://www.amazon.com/How-Day-Trade-Living-Management/dp/1535585951
  
• Trading in the Zone by Mark Douglas: https://www.amazon.com/Trading-Zone-Confidence-Discipline-Attitude/dp/0735201447
  
• One Good Trade by Mike Bellafiore (who is a co-founder of SMB Capital): https://www.amazon.com/One-Good-Trade-Competitive-Proprietary/dp/B00904ACVE/ref=sr_1_1?keywords=one+good+trade&qid=1566060937&s=books&sr=1-1
  
• The PlayBook by Mike Bellafiore: https://www.amazon.com/PlayBook-Inside-Professional-Trader-Paperback/dp/013518889X/ref=sr_1_2?keywords=one+good+trade&qid=1566060937&s=books&sr=1-2