I love this simple video summary of indexing.
You can help contribute to the genealogy community by participating in an indexing project. All those digital images are ‘stacking up’ just waiting for you.
These are some indexing projects I am familiar with:
There are plenty of indexing projects looking for volunteers. Want to help index records for locales you are researching? Check the project lists at FamilySearch and Ancestry World Archives Project. Still don’t see your peeps stomping grounds? Spend a few minutes with google, there may be a project you can help with that will help your research.