do some more searching m8 until u understand the principles of how it works!
(not being smart arsed there btw - that's for ur own good!)
Basically, yes, u use net pots (pots with lots of holes instead of just at the bottom) & u encourage the roots to grow through the nets & into the bubbling solution.
Normally, immersing the roots in liquid would kill them off within days, but as the liquid is a froth of oxygen rich nutrients, the roots thrive.
Try it out m8 - they're well easy to make & give top results for next to no £/$ outlay.