GPS tracking

I will give longitude and latitude data to the GPS shield how i can track the position and go to there.

please help. :(

Normally the GPS tells you where it is. You can't send it data.

If you know where you are (from the GPS shield) and you know where you want to be (from stored coordinates) then there's only a little mathematics to work out how to get there.

Look in books on navigation. Many boat chandlers have such
books that tell how to calculate courses.

The library TinyGPS has a "course to" function, which returns the bearing angle and distance to the target point.

Here is an excellent reference for the algorithms.