Glad you love it!
There are a bunch of things you want to learn about it -- Check the BerryFAQ.com BlackBerry FAQ thread at the link below.
Neat little things like holding the ALT key (bottom-right key) and the side button, to multitask between applications (like Windows Alt+Tab). Yes, as you can see the BlackBerry mutltiasks much better than the TREO does.
And other things like downloading instant messaging software if you want always-on MSN/AIM/ICQ/Yahoo chat, or things like one-click weather forecasts and 411 directory lookup (even faster than even the already-fast BlackBerry web browser). And yes, SCROLLABLE GOOGLE MAPS on a BlackBerry from websites such as www.freek.ca