>>102733
On the Start page, you should see a menu and some content. The first part of the content is a list of "Directories of websites on Freenet". You are probably interested in unfiltered stuff, so Linkageddon might lead you into the direction you are looking for.
This directory is updated from time to time (Last time was 17.Nov). From that point on, you can go to all kinds of pages with all kinds of content. Some links go directly to freepages with content, others go to special Directorys. Linkageddon gives warnings like "Index of some freesites that may contain underage material." If you don't like that, you don't klick the link.
Another way to get into freenet are different discussion forums. You find info about this in the menu of the start page or with google. Frost, for example, is a large forum system which has to be installed as a separate software.
Freenet is as save as it can be today. It might be possible for a secret service to follow and analyse the full traffic and to guess what you are loading but they never would compromise this capability by going behind some unimportant lurker.
The weak spot of freenet is, that someone gets access to your computer while it is running. You can encrypt everything with truecrypt but this is open while freenet is running. Freenet is slow, so you need to run it for longer periods of time.