As Alpine said, you can play the game without using the walkthrough, click on the crystal ball and there should be an option called 'ask for a hint' and it will point you towards what you should be doing. It isn't going to tell you go here, click this, enter that, it will say things like 'I wonder what Valerie is up to' (hint: Go find Valerie and talk to her).
I haven't beat this game yet (still playing through it) but it plays a lot like most other RPGM games I have played, just remember to talk to everyone and touch, poke prod, finger, and fondle everything in the game. If you're still not sure what to do, ask the crystal ball.
