Hi Bandwer,
Glad to know that you are trying Hyracks! For the "x red marks" in eclipse, I don't know whether you did run "mvn clean package" before importing the source code in eclipse (following the instruction in
https://code.google.com/p/hyracks/wiki/QuickStartGuide). There should be no error if you run that, as it would download necessary dependencies to your machine.
Another way to solve this problem in eclipse directly is to right click the hyracks project in your Project Explorer, and choose "maven->update dependency" and "maven->update project configuration". Let us know if this cannot solve your problem!
For the instruction manual/development guidance, they are still under construction now. Please feel free to let us know what you want to figure out, and what you want to achieve, then we can provide more information according to your demands, before the manuals are available.
Best,