This set includes the basic electronic parts the ATmega328P needs to work, plus a reset button and a LED for your first program code.
Included in the kit is:
1 x MCU ATmega328P-PU with Bootloader for Arduino installed
1 x DIP28 socket for MCU
1 x Crystal 16MHz
1 x Capacitor 100nF blocking capacitor
2 x Load capacitor for crystal (16-22pF)
1 x Resistor 10k (pull-up for reset line)
1 x Resistor 330-1000 Ohm (LED current limiter)
1 x LED 3mm (different colors)
1 x Reset button
The schematic is shown in the pictures.
We recommend our CH340 USB-TTL adapter for programming your Arduino with Arduino IDE using a USB connection to the host computer: