Android/iOS/Web: Meditation can have a ton of benefits, but it's often hard to learn if you've never tried. Headspace helps by walking you through the process in 10 minute increments each day.
The service comes with a series of brief lessons that help you get the hang of meditating. You can take the lessons at your own pace. Initially, Headspace offers ten free lessons, but you can get more by paying extra, though it's not strictly necessary. Once you get the basics down, you can meditate on your own.