When I'm writing an article, and I want to tell my readers what I'm going to do in the subsequent text, can I use the present, or do I always have to use a construction expressing the future? For instance, would the following be correct:
First I explain basic terminology, and after that, I move on to...
Or do I have to use a construction expressing the future, as in
First I will explain basic terminology, and after that I will move on to...
Thank you for your help!