Re:newbie knows nothing about mixing in sonar 6 at all help help help help !!!!!!
If you record your voice over an instrumental you really mix much more than your voice (you can effect some balance with a multiband compressor but if you're a n00b I'd advice against that, leave the multiband alone until you are comfortable with a normal compressor). The instrumental is already mixed by the producer/beatmaker and if it don't sound good as it is you need to get another beat to start with.
For your voice listen if it's even in volume. If it's not either ride the fader to even it out or apply a compressor. If it sounds dull try adding a little high eq, if it's muddy or boomy try removing some low to low mid. You can start out with presets and see where they take you to learn but as you evolve you'll see that no preset matches everything since every sound and mix is unique. Also try adding just a little reverb or delay and see what it does, if it sound good keep it and if it don't bin it.
About the tutorials telling you to raise the drums and guitar they must be crap tutorials... Before raising or lowering anything listen to your track a lot of times and to tracks you like a lot. Does your drums seem like they dissapear in the mix then raise them, if they overpower everything maybe they should be lowered (if your working with a mix that is).
Hope that helps a little. Also what you really should do is read the Sonar manual to learn more about the program (hit F1 to bring it up).
Sadly very reduced studio equipment as it is... ASUS G750J, 8 gb RAM, Win8, Roland Quad Capture.