Hello !
Good choice, because the Mylo is not so good anyway !

- Diablo is the latest version of OS 2008. Definitively a must have ! There are ways to install Ubuntu or community driven Maemo successor : MER, but it's still not 100% usable, i would recommend to use diablo, at least for the beginning.

- FB READER is very very good for reading eBooks on N810, you can rotate the display, configure the keys, the color ... and you know, N810 screen is reflective, that means that you can read it in full bright sun, and then power off the backlight to spare battery time

- CANOLA is great for music, not so much for video. I keep using the default player for video.

- QUIVER is the best picture viewer, fast, good ergonomy ...

- SCUMMVM works like a charm ... i'm playing the hilarious Day Of The Tentacle these days ... otherwise ... well ... gaming is not the strong part of N8xx

- GPE calendar, todo & ERMINING are the best PIM I found, with Google agenda sync

- EVINCE is the best PDF viewer

- XOURNAL is a wonderfull notebook

HAVE FUN GUY !