There is often a vegan section in the produce section
The frozen area will often have a plant-based protein section
Plant-based options will often be found interspersed throughout the store
Don't feel bad for asking a million questions!
Many people are unsure what vegan means...it's ok to clarify with your server "no eggs, milk, cheese, meat or meat broth". I know you are saying "meat broth?? Really??" Yes, really. For some reason, broth seems like non-meat to omnivores.