Things to keep in mind:
Lawn Equipment: Sharpen the blade and tune up your lawn mower:
-Change oil at the beginning of every season
-Replace or clean the spark plug
-Replace or clean the air filter
Avoiding Weeds: Spring is the best time to prevent weeds by using a pre-emergent weed control; preventing weed seeds from germinating. Your first application of a pre-emergent herbicide should occur when the threat of frost is gone. That should stop crabgrass and other weeds before they have a chance to grow. Pre-emergent herbicides should last about 3 month, so plan your second application during the summer.
Mowing: Begin as soon as your lawn needs it but try not to cut off more than 1/3 of the blade's length at a time.
Aeration: Unless your lawn is heavily compacted, this is something that could wait until fall. If you do need to aerate, wait until you have mowed at least 2-3 times to ensure that your lawn is growing fast enough to recover from the aeration.
Watering: Hopefully you won't need it this spring but once your grass starts growing, you’ll need to make sure your lawn gets at least 1” of water per week.
Fertilizing: Try to avoid heavily fertilizing your lawn in the spring. Heavier fertilizer applications do the best when done in the peak growing season, fall. Cool season grasses typically require 4 applications annually: Mother's Day, 4th of July, Labor Day, and a fall application.