You can make text links in the authoring environment without writing actionscript.
Just select the textfield, and in the properties panel, enter the absolute url in the link field.
Fancy stuff, like rollover popup messages, and sophisticated internal project navigation requires actionscript.
Download and install the GAIA framework, and watch the tutorial videos.
This will get you up and running quickly (5-10 minutes for a functional site skeleton).
You will then have a project you can build on and learn from. Seriously, I wish this framework had been available when I was first learning.
GAIA video tutorials
GAIA FITC seminar (excellent overview of the framework)