AMC 360 help

I called around and got prices around 300 then 5-9 dollars for valves as needed. That's me bringing the heads to them of course. If I pull the heads will it be obvious what needs to be done? I have done my own automotive work in the past, swapped motors in an xj, transmissions in a suburban, intakes etc so am comfortable in doing the work just have never worked on heads, valves, pistons etc... Don't know why but it has always kinda intimidated me.