"Are we men?"
I am struggling to learn Italian, too! If you click down on the box that says "conjugate" when it introduces the verb, the conjugation is there, and the pronouns are shown. Plus you get to see the infinitive, essere, which, in this case, bears little resemblance to the conjugation of the verb across the different pronouns.
De, which is the root form of degli, simple means an unknown amount of something. So 'siamo degli uomini' would mean we are an unknown amount of men. Hope that helps ;)
Addendum: Here are all the conjugations I've come across in my studies. Del (de + il) like del caffe which means an unknown amount of coffee; Delle (de + le) like delle donne which mean unknown amount of women; Dei (de + i) like dei bambini which means an unknown amount of kids; degli (de + gli) see above.
Since this is a question is it normal to have the subject first still? I am used to questions going in the form of verb subject, and i wonder if both ways are right, or is one method more common or proper versus the other - for example, I would think the question would go "Siamo noi uomini?"