You can't learn how to meditate from apps, articles or mini-courses on the web!
Meditation is an art that can only be mastered on one's own, through long hours spent on the cushion. But, as with all spiritual practices, it is very helpful if we are guided by a well-trained meditator through our meditation process.
Take your time; try a few meditation teachers; find the one who is really qualified in the authentic lineage and is a good meditator himself.
The great teacher
of the ancient meditation tradition
Master Je Tsongkapa (1357-1419)