Haribol Prabhu!
Please accept my dandavat Pranam!
Hare Krsna Hare Krsna Krsna Krsna Hare Hare
Hare Rama Hare Rama Rama Rama Hare Hare!
Krishna and His energy are fully present in the sound of the mantra, so even if we don't know the language or intellectually understand how it works, by coming in touch with Krishna we'll become happy, and our life will become sublime.
As for the word "Hare" it's a call to Krishna's divine energy. Just as the sun shines forth to us through its energies like heat and light, the Supreme reveals Himself through His multitude of energies. If the Supreme is the source of everything, then whatever we see--and even what we don't see-- belongs to the energy of the Supreme. Jai Shree Krishna!