Zen takes a bit of pride in being confusing, confounding. That's why the first Koan to study is: "You know the sound of two hands clapping. Now, what is the sound of one hand clapping?" Does it make sense...? Not rational sense.
It started with the flower sermon, where the Buddha prepared to make a dhamma talk, and then just twirled a flower between his fingers. One monk in the audience understood what the Buddha meant, and gave a smile which the Buddha recognized as enlightenment. Then Bodhidharma brought it to China, and basically just stared at a wall for something like 10 years straight, setting an example. His lineage lasted for six patriarch's, the final of which gave the "Platform Sutra".
I highly recommend reading "The Platform Sutra" for two reasons: it's fairly straightforward and accessible (for zen) and because it's all over the web. Other recommended readings are "Zen Mind, Beginner's Mind" by Shunryu Suzuki (Japanese), "Buddhism Plain and Simple" by Steve Hagen (American), or anything by Thich Nhat Hanh (Vietnamese). If you get bored or think you really have Zen pinned down, open up Dogen's "Shōbōgenzō". It is very humbling.
As for your apparent desire for quick realization of the essence of Zen... most masters took 20-50 years of very astute practice before they got to the heart of Buddhism, so you'll need to add some patience to your urgency - the six paramitas (perfections) in Zen are:
Practice those and you will be free from delusion and suffering.
Sit in meditation, relaxing the mind, watching the breath. Then see impermanence and uncertainty leading to craving for certainty, leading to suffering. When you've got that down, stop identifying with your cravings and suffering should slowly fade. To stop identifying with cravings, practice the six perfections. Obsess over generosity, a strong foundation for any spiritual practice. Practice virtue until you think if you give up anything else, you will wither away. Be patient, not expecting immediate results, but working diligently toward those eventual results. Concentrate on the body and mind, taking the breath as your anchor. What is all this effort focused towards? Realizing transcendent wisdom, meaning perception of impermanence, craving, and suffering, and how to end the cycle with perception of emptiness. Then go back to the beginning, expressing your wisdom through generosity, virtue.... etc.
Hope this helps.
Disciples, this I declare to you: All conditioned things are subject to disintegration – strive on untiringly for your liberation.
Sotthī hontu nirantaraṃ - May you forever be well.