i take my hat off to you for having the balls to open the bonnet, and the common sense to ask for help on here. we all start somewhere and im going to resist the temptation to poke fun, although you did make me smile.
theres some PDF files floating round the internet which have allthe service info nthe various skyline engines. find one of those and start there. everything is simple if you have the instructions infront of you.......
glad you got it sorted without damage to the engine, and happy motoring.