Toyota Repair: 85 toyota tercel hatchback, toyota tercel, gasket kit

Question
i am trying to rebuild my heads. would you be able to give me some ideas on where to start and the best way to do it?my car is leaking oil. i know i need to change the head gasket because when i took off the head cover there was some water in the oil.i purchased a new gasket kit and am trying to find someone to redo my heads.if i cant find anyone ill need to purchase a new one.my car blows whitish black smoke from my exhaust. the oil is also leaking from the oil pan. i just bought this car 2nd hand and am having alot of different problems.there  were no seen problems when i bought it a month ago. can you please help me?

Answer
i can only say this. and don't take this the wrong way... i'm trying to put u in the right direction...go to the local toyota dealer and ask them what machine shop they use for there engine work. Then you go to the machine shop and ask the guys there to   do a complete head job, w/valve grind and clean and inspect. that should get you started..REMEMBER THE CAR DEALERS ALWAYS KNOW THE BEST IN THE INDUSTY, THEY HAVE TO!