Maemopad+ is one of the natural, easy to install programs that you first load when getting your N800. I already gave directions to Notecase, which is also easy to install once you find it.

Xournal is similar to Maemopad+ and is also dead easy to install. It has a bug that has a special fix, as I recall. If you click on the Software icon at the top of this page you will find easy installs for the common N800 programs like these.

You seem to have the impression that many programs are difficult to install, perhaps from going through messages here. Users have to get used to the concept of Repositories and how to set them up. After they learn that, there is no problem with installing practically any program that works normally and that is set up for the N800 or N770.