Okay I need to know how to make a skill tree. You should know what a skill tree is but if you don't know exactly what I'm talking about let me explain. Okay so the player starts out with the very first skill and then that skill branches in two. Now there's two skills. The player can get both or just one. Say he gets the left, so then that skill branches in two. See what I mean? Please help me out with this.

Conditional branches and switches would be your best bet. For my project I made a skill tree on its own map but you can accomplish this anywhere that lets you use conditional branches and switches.

If you want some inspiration try the demo for my project. Link's in the sig.

If you want something with a script, Omega's Grid System might be able to help you.
http://www.rpgmakervx.net/index.php?showtopic=28218

If you want something done with just events AND maps, this demo I made a while ago might help you, it has an actor on a map and they can touch crystals to learn skills. It's very close to a skill grid.
http://www.filefront.com/15875699/SkillGridDemo.zip/

If you want something with events AND custom resources, JimmyLy made this very handy skill tree a while ago. While it's for XP, I think it can all be done on VX too.
http://www.rpgrevolution.com/forums/index....showtopic=20562