How to service engine and change window motor?

i have a 99 solora SLE and would like to service the engine myself but don't know where all the spark plugs and oil filter is.I bought a motor for the window and would like to know the easiest way to put it in.
Thank you

If is with the v-6 Engine maybe you will have trobule with 3 of the sparks, maybe if you search for something in the net.