Hi William,
always great to see people interested in contributing :)
For your eclipse problem I am not sure what is wrong, but all you should do is import it as maven project.
If you don't see that option anywhere install
https://www.eclipse.org/m2e/ plugin which will help you resolve your build problems.
As for simple issues to start with go, I think just going trough jira and find something that maybe bothers you or you think
it wont should be simple to fix just grab it, there are plenty issues just waiting to be grabbed
https://issues.jboss.org/browse/WFLYIn short it is easiest to start with something that has immediate effect on you, probably some small bug that is irritating you and we forgot to address it.
If you have any more questions just ask away.
--
tomaz