Download
Drivers
FTDI Virtual COM Port Drivers
http://www.ftdichip.com/Drivers/VCP.htm
Electronics Design Software
EAGLE Schematic and PCB Software
http://www.cadsoftusa.com/download-eagle/freeware/?language=en (EAGLE Light Edition / Freeware)
ExpressSCH and ExpressPCB
http://www.expresspcb.com/ExpressPCBHtm/Download.htm
CircuitLab (Online tool for quick schematics and simulation)
https://www.circuitlab.com/
Flowchart and Diagramming
draw.io - Online Diagramming Tool (Google Drive connected)
https://www.draw.io/