That's better.
I'll admit that I don't care much about the turf in my yard. It's a mix of stuff that gets mowed regularly. I pay attention to the herbs and vegetables. There are some turf gurus who come along every so often to answer questions. You can also search through the forums and probably find some good stuff. You might want to click the "View active topics" link at the top of the forum page.
There are different ways to kill crab grass, if that's what we're looking at. AgraLawn makes a Crabgrass Killer that is mostly cinnamon with some turmeric in it. Wet the area you want to treat and sprinkle it on (read the instructions). And I've also heard that potassium bicarbonate sprinkled on the wet crabgrass can do the same thing. If you use a vinegar weed killer, either 10% pickling vinegar, or one of the new orange oil and vinegar blends, they kill everything they hit (vinegar doesn't kill the root, but if you hit the leaves on sunny warm days a couple of times that will tend to kill it off). If you aim just at the weeds then the grass (is that Bermuda?) that you want that's mixed in with the weeds should fill in. Will fill in. (Pretend you're trying to keep it out, like in my garden, and Bermuda comes in like gangbusters!)
If, on the other hand, that wide-leafed grass is young dallis grass, you'll have to dig it out. A weed popper does a pretty good job when it's early in the season and fairly small.
If those little round leaves are
dichondra, Howard says let the lawn dry a bit and that should slow it or get rid of it. (He likes it.)