I am very new to the bot world and have been beating my head against the wall with trying to find information on the net to learn how to code using Arduino Sketch. Can someone please share with me a simple free roam code to look at as well as upload and use on my new Zumo 32U4 bots? All I’m looking to have them do is avoid obstacles by turning and or just going around them. Any help would be great. What is a good book to buy for self education to do with programing these bots as well as the Aurdrino?