I've been using the Headspace app (https://www.headspace.com/) for a few months now and LOVE it. I highly recommend giving it a try. They have a free introductory course you can try too.
Second, having listened to quite a few guided meditations, I find the Headspace guy (I think his name is Andy) to be one of the best. The meditations strike a near-perfect balance of helping direct my energy and attention in a way that doesn't draw attention to himself or his voice/delivery. i.e. he gives excellent guidance and gets out of the way.