The first two weeks after your installation are the most important for a successful lawn.

Watering and Mowing

Again proper watering is essential to establishment (rooting) of your new sod. It’s nearly impossible to over water new sod! As a general rule keep sod and soil moist throughout the day. As often as 2-6 sprinklings during the day (Morning and afternoon) are needed until the sod begins to root.

Stay off new sod until after the first mowing.
Try cutting back frequency of irrigations just before the first mow to first up the soil.

First mowing is around two weeks following installation. Keep your mower blade high to cause the least amount of stress to the new sod. As with any grass never mow off more than 1/3 of the blade.

Weeks three and four the rules change a bit. Watering can being to be less frequent but should be longer. IE if you were watering for 30 minutes 4 times per day cut back to twice a day for 45 minutes. Deeper, less frequent soakings will help roots to grown down deeper and establish more quickly into the soil. Pull or tug on turf to check for rooting.
Fertilize your new sod lawn at one month to continue to encouraging rooting and establishment.

Sod Trouble Shooting Tips

Sod not rooting: Most sod varieties will begin to root within 10 to 14 days. Check watering schedule and adjust to deeper, less frequent soaking. Excessive shade will slow down rooting.
Mushrooms: Should be temporary. They usually growing in compost mixed into the soil at preparation. As watering get deeper and less often, mushrooms usually dry up and wither away.
Edges turning brown and/or gaps between rolls: The sod is shrinking or has pulled up at the corners. Due to lack of water! Increase minutes per watering and frequency to minimize gaps. Also, hand watering sod will help shrink gaps. Pressing down edges with foot after watering.
As you have read above water is your new sod lawns best friend.