Hi ketanco,

1. You should not be entering dates into Project. Create the tasks and create the links (predecessor/successor) to drive the schedule.
2. You do not need to enter baselines -- once you've finished entering the tasks and making assignments as needed -- you save a baseline through Project Tab > Set Baseline.
3. Actual Start, Actual Finish, Actual and Remaining Duration, and Actual and Remaining Work are used for tracking tasks -- marking progress.

You might benefit from the investment in a good 2-3 day hands on Project class. Project is not a product that is terribly easy to learn on your own and you can develop bad habits (like typing in dates) that will cause you huge amounts of grief later on.

Julie