Reviewing quantum fundamentals and related subtleties, which typically are not discussed sufficiently — even if at all — in standard texts and discussing "paradoxes" arising as a result. The purpose is to expose quantum ideology in manifestly wholesome, yet possibly plain and simple way, without mysterious surrogates. Main topics include: general Quantum Mechanical framework as imaginary "diffusion"; superposition / interference of probability amplitudes, not particles; Statistical vs Copenhagen interpretations of Quantum Mechanics; quantum measurements as mapping from amplitudes to probabilities; wave-ensemble parity instead of wave-particle duality; quantum field theory as a manifestation of quantum vacuum and the ideas of Grand Quantum Canonical Ensemble; entanglement as a consequence of an integrity of the quantum system and "spooky actions" as a mystification of simple conditional probabilities.