Today also i was happened to read from the documentation :
Day 2. Basics about electronics
- Basics about electronic components
- Basics about microcontrollers
- Registers
- Fuses (HIGH, LOW, EXTENDED) Tutorial: http://fabacademy.org/archives/2015/doc/fuses.html
- Interrupts
- ADC
youtube electronic serieses helped me to get to know about the same also the book i downloaded yesterday and the books thats shared by trainer