When I got my 1998 Odyssey, I was directed by the dealer parts counter
to Helm, where I bought a paperback service manual that was pretty
good. I just bought a 2007 EX and went to Helm's website (I haven't
asked the parts counter yet) and saw that they have several manuals for
the car, as well as an online service.

Does anyone know which manuals I need? Maybe the Service and the
Electrical Troubleshooting Guide, but not the rest? Has anyone tried
the online service? For my Subaru, a different website had something
similar, that would let you download up to 20 PDFs/hr. for 3 days for
$35. If you downloaded all day for 3 days, there was just enough time
to get all the manuals.