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BOOKS

Children Electronics and Electricity books:

• "Electricity for Young Makers" by de Vinck.
  
  
• "Make: Easy Electronics" by Platt. (12 experiments)
  
  
• "Electronics for Kids: Play with Simple Circuits and Experiment with Electricity!" by Dahl.
  
  
• "Electronics For Kids For Dummies" by Shamieh. (13 experiments)
  
  Newbie Electronics books:
  
  
• "Make: How to Use a Breadboard" by Ragan and Culkin. (10 experiments)
  
  
• "Make: Electronics" by Platt. (34 experiments)
  
  
• "Make: More Electronics" by Platt. (36 experiments)
  
  
• "Lessons in Electric Circuits - Volume VI - Experiments" by Kuphaldt. (free book)
  
  
• Series "Engineer's Mini-Notebook" booklets by Forrest Mims. (download archives)
  
  
• List of books about 555-series Timer ICs on Wikipedia.
  
  Basic Circuit Theory books:
  
  
• "Electrical Circuit Theory and Technology" by Bird. (download old edition)
  
  
• "Introductory Circuit Analysis" by Boylestad. (download old edition)
  
  
• Series "Lessons In Electric Circuits" by Kuphaldt. (free books)
  
  
• List of books about Diodes, Transistors on Wikipedia.
  
  Analog Design books:
  
  
• "Microelectronic Circuits" by Sedra and Smith. (download old edition)
  
  
• "Electronic Devices and Circuit Theory" by Boylestad and Nashelsky. (download old edition)
  
  
• List of books about Operational Amplifier (OpAmp) ICs on Wikipedia.
  
  
• List of books about LM-series Analog Linear ICs on Wikipedia.
  
  Digital Design books:
  
  
• "Digital Fundamentals" by Floyd. (download old edition)
  
  
• "Digital Design: Principles and Practices" by Wakerly. (download old edition)
  
  
• "Digital Design: with Introduction to Verilog, VHDL, SystemVerilog" by Mano and Ciletti. (download old edition)
  
  
• "Digital Design and Computer Architecture" by Harris and Harris.
  (download old edition)
  
  
• List of books about 7400-series TTL Digital Logic ICs on Wikipedia.
  
  
• List of books about 4000-series CMOS Digital Logic ICs on Wikipedia.
  
  Digital Signal Processing books:
  
  
• "Scientist and Engineer's Guide to Digital Signal Processing" by Smith. (download or online)
  
  Computer Design books:
  
  
• List of books about
  6502,
  6800,
  6809,
  8080,
  8085,
  Z80,
  68000,
  x86
  processors on Wikipedia.
  
  
• List of books about
  8051,
  ARM,
  AVR,
  PIC,
  RISC-V
  microcontrollers on Wikipedia.
  
  Electronics Reference books:
  
  
• "The Art of Electronics" by Horowitz and Hill. (download example chapter)
  
  
• "The Art of Electronics - The X Chapters" by Horowitz and Hill. Shipping in 2020.
  
  
• "ARRL Handbook" by various ARRL authors. (download very old edition)
  
  Historical books:
  
  
• "The Intellectual Rise In Electricity - A History" by Park Benjamin in 1895.
  
  
• "Electricity - It's History and Development" by William Durgin in 1912.
  
  
• "Bibliographical History of Electricity & Magnetism" by Paul Mottelay in 1922.
  
  
• "History of Communications Electronics in the United States Navy" by Linwood Howeth in 1963.
  
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  MAGAZINES
  

  
  Current Electronics Magazines: (subscribe now)
  
  

• "Circuit Cellar"
  
  
• "Elektor"
  
  
• "Everyday Practical Electronics"
  
  
• "Nuts & Volts"
  
  Historical Electronics Magazines: (archives)
  
  
• "Electronics Today"
  
  
• "Everyday Electronics"
  
  
• "Popular Electronics"
  
  
• "Practical Electronics"
  
  
• "Radio Electronics"
  
  Historical Computer Magazines: (archives)
  
  
• "Byte" - 2nd group
  
  
• "Dr Dobb's Journal"
  
  
• "Interface Age"
  
  

• "Kilobaud"
  
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Arduino is great for plug and play, blink an LED, using code. But if you want to understand electronics I would start here:
Easy Electronics (Make: Handbook) https://www.amazon.com/dp/168045448X/
^you could shoot through this book in a weekend.

After doing that book I would get this book:
Make: Electronics: Learning Through Discovery https://www.amazon.com/dp/1680450263/
You can purchase the parts individually or buy kits specifically made for the books. I found the kits will save you time.
I started like you a few years ago and now have moved on to arduino and am designing my own PCBs. Good luck.