Drop me a note if you can't find anything online - and I can look in my manual for the P 226 - or fax you some pages or soemthing. But it's real easy ... remove the mag, make sure the guns empty, cock the hammer, lock the slide back, rotate the lock (on left side ) forward of the slide lock lever, release the slide, remove the slide from the frame by pushing it forward.
Turn the slide over - remove the guide rod and spring by pushing forward at the back of the guide rod ( hold it firmly ) and lift it up and back to remove (it's under tension ). Then remove the barrel. Clean slide and barrel. Remove the stocks - clean under and around them - and reassemble.
Removing the firing pin, extractor is a little more work - but only needs to be done about every 1,000 rounds or so (and some guys never do it).