We are happy to help you troubleshoot any activity in the course. Please send us an email and include detailed information including which lesson and activity you are working on, what behavior you are seeing in the circuit or program, and what you've tried so far. If you are having an issue with your code, take a picture of your screen or send us an email and the automated reply will list the detailed instructions for emailing us code directly from your Raspberry Pi so the formatting is preserved.
A quick tip: 95% of help requests we receive end up being an electrical component placed in the wrong breadboard hole (or backwards) or a very tiny error in the code (every character counts!) While we generally will get back to you within one business day, it is likely that going back through your circuit and code very carefully to double check each connection and line of code will find your problem and get you back on track more quickly than waiting for an answer.