Have you ever used Gate Guru? It can be found at www.gateguru.com.
Why would you check it out? Several reasons:
You can save your upcoming and past trips. This means you can put your itinerary here, including any info you might need that day. Think of hotel reservations, phone number of your hotel or destination, and more.
If you need to, you can even rent a car thru here.
And, of course, get important information about your gate.