Beginner Gardening: Lawn care help!, 1 by Rjp20

Rjp20 wrote:
With the recent success of the flower garden in front of my yard, i am now inspired to tidy up and make things start looking good! My new problem is the front yard. I have problems with the front yard and the back yard, but i want to address the front yard first.

The yard is not very green, and I believe that there is a couple of types of grass growing. I wanted to know what you guys think i should do to make it look good? What kind of weed killer, fertilizer, and or grass seed should I get. As usual im completely lost, so i need a little help! Attached are a couple of pictures, the first is a closeup of the yard, and the second is a shot of a portion of the yard, its not the complete front yard though... fyi... Thanks!

Thanks in advance!
~Rjp20