Yeah there are some limited Aramaic in the gospels and in Paul. There is no Aramaic in Revelation. But there are many Aramaisms...the Greek is that of an Aramaic-speaker who made a lot of "mistakes" in writing Greek as a second language. The commentary by Aune (in the introduction in Volume 1) gives a full listing of all the solecisms.
Is there a way to type in Greek from one's PC keyboard?
I simply transliterate into English characters on this board, using diacritics to distinguish vowel length. There are Greek characters available (see the Omega symbol on the style palette), so you can use these if you wish.
Does "Revelation: It's Grand Climaz at Hand!" have any Greek quotes in it?
LOL I seriously doubt it; if any appear at all, I would guess only superficial use if made of them. The book you are presently reading is an actual commentary devoted to understanding the meaning of the text. The Climax book is nothing of the sort.
But wait, wasn't Hebrew a dead language when Jesus walked the Earth?
No, it wasn't. But it wasn't widely spoken by the general population.