I need to design primers for a viral c protein sequence. I need some help to get this done. Please someone suggest if there is any online blog or course.
I'd suggest talking with a colleague. The best way to learn is by designing primers with someone.
I don't know how much background information you have about PCR and primer design. Most companies that sell primers will provide some guidelines, but that assumes you already know the basics. This publication should help you with the basics.