On which side does the earth tilt to? I have tried figuring it out myself but I can't seem to find the answer.
Relative to the ecliptic, the Earth's north pole is tilted toward ecliptic longitude λ=90°, where the Sun appears at the June solstice. Constellations in that general direction are highest around midnight in December and January: Auriga, Orion, etc.
The Earth's south pole is tilted toward ecliptic longitude λ=270°, where the Sun appears at the December solstice. Constellations in that part of the sky are highest around midnight in June and July: Sagittarius, Ophiuchus, Hercules, etc.
Even though axial precession changes the celestial poles' orientation relative to the stars in a cycle of about 26,000 years, their ecliptic longitudes with respect to the equinox of date are constant. The north and south ecliptic poles precess by much smaller amounts and have constant right ascensions α=18h and α=6h respectively, relative to the equinox of date.
Stellarium might help you visualize all this. In the View window, Markings tab, you can ask it to plot the equator, ecliptic, and celestial and ecliptic poles of date.