I don’t know anything about engineering societies, but in general, joining associations in your career field can be beneficial. In the nursing field, the American Nurses Association has scholarships available to it’s members for furthering their education and then also have continuing educations programs to help nurses keep up to date with their practice. I would imagine an engineering society would have similar benefits for it’s members. I would recommend doing some research about them and joining one if you could afford to do it and plan to be in the engineering field for a while.