First thing is to pick up fallen tree limbs and rake any lawn areas that have a fungus called snow mold. These patches will be white or tan and will have grass blades stuck together in a mat. When you use a leaf rake on these patches, you help to expose the grass plants underneath the matted grass blades to sunlight and air so they can grow. You can also rake any matted tree leaves so your grass will fill in thin areas faster.
Mow your lawn as soon as you start seeing the first sign of green growth. Some folks like to drop their mower height down a notch for the first mowing to remove the brown, dormant grass blades that remind them of the kind of winter we had this year. Just remember to raise it back up so your grass height after you cut is around 2-1/2 to 3 inches.
The next step is to figure out what to feed your lawn. You make your choice based on whether you had annual weeds, like crabgrass or foxtail, last summer. If your lawn has bare spots, spread seed and water accordingly. Remember to keep any type of crab grass prevention away from areas needing seeded.