There is some help in the Release Notes

You should be able to find help in applications by pressing F1
(you'll need an onscreen keyboard )

Also, you should be able to use the desktop Ubuntu help, because as far as I know it might be the same in some areas - most likely the documentation for 12.04, or 13.10 - as Ubuntu Touch is still fairly new, I don't think their is much actual help or documentation for it.

_{(Sadly, I don't use touch - I am not brave enough to try installing it on anything)}