Q: I tried to find my iPad through find my iPad device on my iPhone It says device is offline I am also given option to lock the iPad ZIf I do that will I be able to find the device? Will it need to go online  and not do so once I lock it in lost mode

You cannot lock or find the device until it comes online. You can schedule a lock sequence to be sent once the device is online. That's it. Furthermore, if whoever finds the device completely erases it, then even when it comes online you will not be able to track it.

What To Do If Your iDevice Is Lost Or Stolen

If you activated Find My Phone before it was lost or stolen, you can track it only if Wi-Fi is enabled on the device. What you cannot do is track your device using a serial number or other identifying number. You cannot expect Apple or anyone else to find your device for you. You cannot recover your loss unless you insure your device for such loss. It is not covered by your warranty.

If your iPhone, iPod, iPod Touch, or iPad is lost or stolen what do you do? There are things you should have done in advance - before you lost it or it was stolen - and some things to do after the fact. Here are some suggestions:

  1. Reporting a lost or stolen Apple product

  2. Find my lost iPod Touch

  3. AT&T. Sprint, and Verizon can block stolen phones/tablets

  4. What-To-Do-When-Iphone-Is-Stolen

  5. What to do if your iOS device is lost or stolen

  6. 6 Ways to Track and Recover Your Lost/Stolen iPhone

  7. Find My iPhone

  8. Report Stolen iPad | Stolen Lost Found Online

It pays to be proactive by following the advice on using Find My Phone before you lose your device:

  1. Find My iPhone

  2. Setup your iDevice on iCloud

  3. OS X Lion/Mountain Lion- About Find My Mac

  4. How To Set Up Free Find Your iPhone (Even on Unsupported Devices)