I've got an abundance of cilantro. I have used for some, but what can I do to store it for later use? Freeze? Marinades? Ideas please.

I make cilantro ice cubes. Whirl cilantro and a little water in food processor , spoon into ice cube tray and freeze.

Kenji on Serious Eats just did a detailed experiment on all of the suggested storage solutions for fresh herbs. He concluded that cilantro is best washed immediately when you bring it home. Trim the stems and put in in a jar with water. Then slip a plastic bag over the whole thing and rubber band it to the jar. Mine kept that way in the fridge for 3 or 4 weeks.

Article is here. http://www.seriouseats.com/2015/04/the-best-way-to-store-fresh-herbs-parsley-cilantro-dill-basil.html

Use it to make pesto.

See this for some ideas
https://food52.com/hotline/6261-preserving-fresh-herbs
or search "herbs" in hotline for more suggestions.

Chop, put into plastic ice cube tray, & cover with olive oil. Freeze, pop out & store in freezer bag to use at a later time:)