The N900 has a built-in software catalogue called Maemo.org (aka Maemo Extras on some firmware versions) which contains lots of great freeware. Some N900s have the catalogue activated by default, others have it disabled by default. The video below shows how to activate the catalogue if needed, and how to download freeware from it.
Click here for a complete list of All About Maemo's Nokia N900 Tutorials
The N900 has a built-in software catalogue called Maemo.org (aka Maemo Extras on some firmware versions) which contains lots of great freeware. Some N900s have the catalogue activated by default, others have it disabled by default. The video below shows how to activate the catalogue if needed, and how to download freeware from it.
(You can also see this video on All About Maemo's YouTube Channel.)
You can also download even more freeware for the N900 from Ovi Store, which you can visit by clicking on the Ovi icon in the application menu.