Most of your CS classes will use an online Q&A system called Piazza. The system allows you to ask a question and receive answers from other students in the class as well as TAs and professors. It also allows course staff to make announcements to everyone in the class. I would strongly recommend taking the time to read all of the questions and answers that get posted. Even if a problem does not pertain to you, it is still possible to learn something new from it (or from one of the solutions). Helping to answer questions is also a great way to reinforce material you have learned, study, and help your peers. Furthermore, sometimes questions will serve as clarifications about assignments and will be used as the final guidelines on how to complete homework.
More immediately, the CS and ECE Departments have created a Piazza pages specifically for answering your questions here:
To create a Piazza account, you need to have a university email address.