[PRBuzz]

If you can still find Scotts Winterizer (promotes root growth) go for in now otherwise just plain turfbuilder. By mid-May put down Scotts with HALTS to prevent crabgrass (preemergent so it is important it is down before ground temp reaches 65d.) Since you have a recent sod yard controls weeds by spraying something like weed-be-gon, don't fool around with the fertilizer plus weed killer (pellets must stick to leaves of the weeds to be effective).

I have attached complete written lawncare guide if you are interested. I am not a pro but my neighbors are envious of my lawn and I don't water at all.