I did my first proper meditation session the other day, it was a guided one with a teacher talking us through it, so not an app or anything like that. We were sitting out in the park, it was a lovely warm day, the birds were calling, and we meditated for about 15 minutes.
Oh it was wonderful. The sense of calm and peace that I felt afterwards was amazing, I felt so centred and just really good. If you have never tried it before then I recommend you definitely try it, it will surprise you.