When picking trace widths to route a PCB, there are a few rules and guidelines that will help inform the value of the trace width.
Adding external Part Libraries, DRCs, and CAM files to KiCad
How to start using the EFM8 series of Microcontrollers.
An AVR MCU example board using the Tag-Connect TC2030 cable for programming.
An introduction into pogo pin programming cables and their usefulness in prototyping and low volume manufacturing.
How to add custom part libraries and files to Eagle.