If you're new to adventure games, check out:
http://www.escapemi.com/strategy.php)
Just apply it to Grim Fandango and start posting your problems in this forum. We'd love to help you out (and keep the game fun.)
Yes, otherwise we'd just post the walkthrough here and stick it at the top. We'll try to let you guess your way out of the problem with advice, rather than spoil the game for you.
Hints and tips are the way to go, keep it up, keep it up.