As others have mentioned, get your soil tested first. Add any soil amendments required. Plug aerate it in the fall and plant a seed mix that's suitable for your climate. Put down winterizer fertilizer. Water daily, maybe twice daily, until the new seed is sprouted and up through the existing grass. Very early in the spring before temps rise too far (again, based on your temps), apply lawn fertilizer with crab grass killer. You may have to hit it twice a few weeks apart, as you want to hit it BEFORE the crab grass seeds sprout, but it only sits on the soil so long, and there's no way of accurately predicting when the crab grass seeds will sprout because it's based on soil temps, air temps, moisture, light, etc.... anyhow, you get the idea. Grab grass won't respond to killer once it's sprouted, so preventer is the way to go. 6 weeks after the last fertilizer/grab grass preventer application, start using regular summer fertilizer with weed and feed every 6 weeks. Then in late summer, say September/October, put down an application of winterizer fertilizer once or twice, depending on your growing season.
Watering, as others have mentioned, should be less frequent for longer periods of time. Frequent watering makes the grass "think" it doesn't have to send roots down very far to find water. If you water deeper/longer/less-often, it stresses the grass to send roots down deeper to find the water. So, again, depending on your soil type(s), shade/sun, etc... figure out how much water you need per week and divide by 3. Water your lawn 3 times per week giving it 1/3 of the weekly required water each time. Rest on Sunday.
In the fall, bag your last few cuttings in September/October. That'll catch any crab grass seeds that may be around from surviving/wind-blown in crab grass plants. Test the soil. Add amendments. Aerate again, etc... but you shouldn't need to add seed at this point.
From then on out, it's just a matter of testing, amending, aerating and fertilizing with crab grass preventer in the early spring, regular fertilizer with weed killer during the late spring and late summer, winterizer fertilizer in the fall, and regular watering.
Easy peasy! :laughing: