1. https://en.wikipedia.org/wiki/Power_tool
2. https://www.familyhandyman.com/list/best-hand-tools-for-a-serious-diy-er/
3. https://www.popularmechanics.com/home/tools/reviews/g1960/best-power-tools/
4. https://www.thisoldhouse.com/tools/21016876/must-have-tools-for-every-level-diyer
