Best advice: Explore and experiment.
I could be mistaken, but I doubt anyone here is going to hand you a "1-50 in X days" strategy guide. However, people here WILL offer advice if you get stuck, or information if you get lost. It is my opinion that this community would rather see someone learn the ins-and-outs of their character instead of "1, 2, 50, I win".
This isn't a flame, and I don't mean it in a condiscending way, but making your own way to the top (with a little help here and there of course) makes a LOT better of a player in the end. Someone that will know their character inside and out. Someone that can be relied upon in a sticky situation.
That said, I don't mind giving you advice, but I'm not about to write or provide a step by step guide to getting level 50 in a week. No offense.