As a starting place, the design section of the 1.5 manual is a good overview of major components and how they interact at a high level.
>From there, you should definitely go through the "getting involved" page and  and developers guide. Finally, use the dev guide to work through a full initial build - test - demo instance cycle. I'd recommend doing this off of a recent stable release so that you know things are supposed to work out of the box. (e.g. you can replace the trunk checkout with a checkout of the 1.5.0 release tag)
After that, take a look through the tickets labeled "newbie" for anything that catches your interest. There are all issues that existing project members have flagged as good for those getting started int he code base.
> Hi guys, > > I am looking to get involved with Accumulo. Do you all have any suggestions > for wrapping my head around the code base? Also is there anything easy, > like hello world easy, I could start on? > > Cheers, > Miguel >
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