I tried contributing in gridcoin some time ago, but i found the process of selecting a project and getting rewarded confusing .
The guides have been updated recently, the easiest route to earning GRC is via pool crunching on grcpool.com
I think the gridcoin software needs to include some sort of Boinc project list that can help users select their project easily
The gridcoin website provides a list of projects: https://gridcoin.us/guides/whitelist.htm