Droid Engineer Archive

Ok, here is the story. The other day I got a holocron. It told me I need to become a master Droid Engineer, so I plan to do that. The thing is that I dont know what is the best way to get there and if it makes much money. Is there some special item that I should grind to get to master DE the quickest, or should I just make myriads of miscilaneous things? Once I get past novice DE what skill should I get first, and what droid sells the best if there is one? Overall, any info on DE will be greatly appreciated by me. If anyone reads this post, please respond and if you know any DE please ask them to read this.

Thanks for anyones help. Zanz (intrepid)