Your password is something you use to access accounts.
You cant except when there is an forgot password function or if you saved it somewhere yourself.
You can chat on Facebook by clicking someones name on the right down side of your screen after you have added them as friend.
Go to Start, control panel and click on delete or remove stuff and delete the toolbar.
Its the day that you were born. Or the exact date in another year.
Then ill just have to wait.. until someone finds them
Go where you can use the coupon and ask if you can redeem the coupon. If its online look for redeem coupon on that certain site where you got it for.
Enter the code.
I dont think you can get free facebook credits. Only for a certain game. There probably isnt any code.
Usually you can go to options and press delete account. Or you can search for how to close your account in their questions departement. Usually it will bring you to somewhere where you can close your account.