The energies and distance scales at which matter reveals its structural layers are summarized below. If you are planning to go quark-hunting, a word of caution may be in order. As Sheila has said in the story, quarks always hide inside hadrons. Quarks do carry electric charge, but they carry fractional charge. Their fractional charges are not visible as quarks and are always hiding inside hadrons.
Quarks also carry 'color charge' which is a property like charge or mass.
Quarks are permanently confined within hadrons and so their fractional charge is hidden from all. Ongoing international experiments are searching for such a new state of matter.