Hi there!
In case you ever get stuck, there are two steps to take, that will be most efficient:
Check in the course discussion if someone has already asked the same question, almost always you'll find the answer there as well
Check your question at Stack Overflow or Google
In case you have an answer to a course discussion, please feel free, to help out - the student who had the challenge and I would be very grateful :)
Have fun with the next lessons,
Denis