What to do with this lawn?!

[Ben C.]

Hello,

I have no clue what is the best thing to do with this yard or lack of anything but dirt in the front and back! I am thinking to maybe sod the front (for curb appeal and it is much smaller then the rear) and no clue what to do with the back... Any thoughts? Also, keep in mind there is no sprinkler system and I don't really want to spend the money to put in a brand new system! Sorry for the pictures no clue why it rotated some of them.