Welcome to the forums, Peter! Glad to help.
From my conversations with customers, it does take a little bit longer to get the hang of OmniFocus in comparison to some of the other task-management apps out there. That said, customers also tell us that OmniFocus scales up to the needs of folks with a lot of tasks to manage better, too.
There are a number of free videos available in OmniFocus' section of
our website. (The iPhone and iPad apps have their own videos, as well.)
There are also some non-Omni sites that have videos available for free. Here's
one example (and
here are a few
more that may be useful.)
The
OmniFocus and GTD white paper available on our site may also be useful, as well as a number of other threads here on the forums. The community is very helpful, though if you need a response as rapidly as possible, emailing our
support ninjas is often your best choice.
We don't have plans for Android or WebOS apps in the foreseeable future, but you can use send email to a special
send-to-omnifocus email address to store up messages you'd like to add to OmniFocus when you get back to your Mac.
Hope that helps!