Ok guys i need help

I have sonar home studio 7 xl and i am having problems like. every time i record on a track i cant controle the volume it peeks in the red as soon as i hit record and every track dose that and it sounds real bad and some times i cant turn it down should i set my volume befor i record or what i am not realy good with this program it is a simple program i think. And i have a compressor gate i dont even know how to work that or even how to set it to get the sound i want on my vocals i need some one to make me a video on recording vocals and how to mix them down in or with your recording and send it to me here or at kinoshai@yahoo.com  what i do is i loade an audio song on to a track and then all i do is record vocals i need help with this programe.

You really make usa guess a lot by not giving ANY info that would be needed for answering..
What Greg asks is usually necessary info whenever you ask a technical question.

Assuming you are recording something with microphone, your description sounds like a feedback loop. How do you monitor? If you record with  a microphone, you must not have any loudspeaker monitoring on. Or do you have a laptop integrated mic that's left on?

The level of the recorded signal is adjusted in the soundcard, SONAR has no role in it.