I have a new comcorder, my question is How can I...

That really depends on the type of input(s) your TV has. You'll get the best picture quality if you can connect your camcorder directly to your TV's S-video input. If your TV has no S-video input, use its composite (RCA-type) inputs. And if your TV has a set of A/V inputs on the front panel, hooking up your camcorder will be extra quick and easy.
If you have an older-style TV with a single RF input for audio and video, an easy work-around is to run your camcorder's signal through your VCR's RCA-type audio/video inputs (nearly all models have them). If neither your TV nor VCR has these inputs, you can make the connection using an optional RF modulator.