I'm ready to upgrade to 1.6.

I've read lot's of different forum topics about upgrading and about steps to take to "prepare" your sites for upgrade etc.

But is there a definitive guide?

One that lays out all of the steps to ensure a successful upgrade.

One that includes all the little steps like switching to core theme, deactivating plugins etc.

The current update instructions here http://docs.oxwall.org/install:update are not really the same detail as many of the forum topics.  But they are all over the place.

If it already exists, where could I find it?

Thanks.