Amp+sub instlal needs help please

[JdrifterCA]

I just got a kicker 650.4 amp and 2 some brand 10 inch subs. I didnt really wanted a sound system in my car but my homie was short of cash and i just took them off his hands to help him out. ^^ Now.. what do i do with these things... Please help. I'm not all that good with cars and kinda learning as my car breaks and falls. So far all i have done is mechanical work... major ones are rebuilded the ka, sr20 swap, blah blah. Now..

I have no idea what to do. I'm thinking I need a new head unit with rca output, so i can directly wire it to my amp. From amp, wire to subs. Power wire to amp from battery for power. Than my subs will work right? But the thing is... how do i make it so only bass gets push to the subs, and no bass goes to my speaks? I think i need a new amp to wire to my speaks if somehow my head unit cant seprate it right? what in a headunit should i look for? i need somthing cheap. lolz rather spend money of a new set of coilovers or brake rotors ^^WOW I cant wait til i start to solder.... is going to suck!