Here is the link to Oracle 10g on OTN: http://www.oracle.com/technology/sof...10g/index.html

And, for docs, yes, I would get the 10gR2 docs if that's the version you are using (always best to have the docs for the same version) - there are some significant changes in 10gR2, at least with the features I tend to use. Of course, you could always just link to the online docs if you don't feel like downloading - you might want to bookmark this page (high-level index for all docs, so you can see the latest DB docs): http://www.oracle.com/technology/documentation/