I am a senior Mathematics Major, and I am interesting in learning about Modular Forms. I have a layman's general sense of what they are but I was wondering if there is a lecture(I am willing to pay) or a book that explains Modular forms in Layman terms to in mathematical terms. I understand it's not the easiest topic in the world so I was hoping I can have it be explained in Layman's terms and then built from there. Any advice or suggestions would be greatly appreciated!

Thank you for your time.