Enjoy your n9. Its a well worth upgrade from the N900. The quickest way i found to add repos was from the n9tweak app but it's not as good as the repos on the n900 so you may as well go to site like this one or http://my-meego.com/downloads

Some of my favourite apps:
fastern9 (makes transition much smoother)
firefox and flashplayer (not as good as stock browser but can force desktop site with flash content)
wazapp (whatsapp client)
kmplayer installed with mplayer (allows many more video files)
homescreen settings (easily gives you rotation and homescreen wallpaper)
myExplorer (file manager that allows you to easily transfer files with pc or nas drive using smb protocol)

Another must ha e tweak for me is the video camera zoom fix see http://maemobriefs.blogspot.co.uk/20...om-in.html?m=1