Oh pish, you guys got hit just as fast as we did, No time! We'll just all learn how to do stuff together. :D
I hit the reply button first and then go highlight the part of the post you want to quote. I just highlight, ctrl + c, and then hit the reply button and ctrl + v after I click on the quote. Try that out and see if it works.
Also if you want to reply to a smaller post you can just click on the quotes of the post you are replying to and then click on "reply to quoted post".