What are the two category requirements for continuing education?

It varies in each state according to the degree you are aiming for.

Call the school you are interested in to see what their requirements are.

First and most important one is to have the will to continue! Although life itself is a kind of a continuing education sometimes you need to keep on learning and develop your knowledge in one or several fields. I got several private courses granted with diploma and now I see the benefits of them. Here in Europe there is this kind of Life long learning program of the EU http://ec.europa.eu/education/llp/official-documents-on-the-llp_en.htm or my friends in Denmark have a trade union that offers courses and another opportunities in the field of continuing education. It is called HK and this one helps both in finding an apprenticeship program or a job. So check it.