Thanks for the quick responses, guys.
My problem is that I have a corner lot, and a decent amount of grass to maintain. The other problem is that I have a puppy, and I'm really skeptical on putting anything on the lawn, but it's so bad now, something has to be done. I've never actually done any of this before, just dealt with the minimal amount of weeds that were there. But it seems to be much worse this year, and quite frankly, embarrassing.
I'll going to begin researching what you guys all recommended.