What is Electronics?
Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles. In simpler terms, electronics is the study of how to control and manipulate electricity to create useful devices. These devices can range from simple circuits that turn on and off lights to complex systems that power computers and smartphones. Electronics is a fascinating field that has revolutionized the way we live, work, and communicate. It has enabled us to create new technologies that have transformed our world and made our lives easier and more convenient.
It involves using active devices such as transistors, diodes, and integrated circuits to control and amplify the flow of electric current and to convert it from one form to another, such as from alternating current (AC) to direct current (DC) or from analog to digital. Electronics also encompasses the fields of microelectronics, nanoelectronics, optoelectronics, and quantum electronics, which deal with the fabrication and application of electronic devices at microscopic, nanoscopic, optical, and quantum scales .

Why Electronics is a Great Hobby for Adults?
Electronics is a great hobby for adults for several reasons:
1. It’s a creative outlet: Electronics provides a platform for people to express their creativity by designing and building their own electronic devices.
2. It’s a great way to learn new skills: Electronics involves learning about various components, circuits, and systems, which can help individuals develop new skills and knowledge.
3. It’s a rewarding experience: The thrill of creating something from scratch and seeing it come to life can be a very satisfying experience.
4. It’s a stress-reliever: Engaging in electronics as a hobby can help reduce stress and anxiety by providing a distraction from daily life.
5. It’s a social activity: Electronics can be a great way to connect with like-minded individuals and build a community around a shared interest.
6. It is not an expensive hobby, you can start with purchasing a few components and then build up your mad science lab.

Recommended Books for People Starting Electronics as a Hobby

Here are a number of books available for people starting electronics as a hobby. Here I listed a few of them to start with (you can order them from amazon.com or pickup in your local library):
The Art of Electronics by Paul Horowitz and Winfield Hill: This book is widely regarded as the bible of electronics and is an excellent resource for beginners and experts alike. It covers a wide range of topics, from basic circuit theory to advanced digital signal processing.
Practical Electronics for Inventors by Paul Scherz and Simon Monk: This book is a great introduction to electronics and covers the basics of electronic components, circuits, and systems. It also includes practical projects that readers can build to gain hands-on experience.
Getting Started in Electronics by Forrest M. Mims III: This book is a classic introduction to electronics and covers the basics of electronic components, circuits, and systems. It also includes practical projects that readers can build to gain hands-on experience.