I've tried and really like the guided meditations (audio) from https://www.headspace.com/

There are some very short ones for free, longer ones cost money

Ajahn Brahm's guided meditation on YouTube isn't bad, and in fact some of his talks are decent as well (and relaxing). If you can get over a bald, English monk in Australia. There's a logical, rather secular sensibility that appeals to the geek that I am.

Helped me through times of personal and work burnout stress.

I listen to guided meditations. They are easy to find online and sometimes only take ~15 min. Here are some of the websites that I use:

https://www.tarabrach.com/guided-meditations/

http://self-compassion.org/category/exercises/#guided-medita...

http://www.mindfulselfcompassion.org/meditations_downloads.p...

I recommend The Mind Illuminated by John Yates. It's a brilliant book, see the reviews on amazon (https://www.amazon.com/dp/0990847705/).

The Calm app is what got me hooked https://itunes.apple.com/us/app/calm-meditate-relax-guided/i...