New to Basecamp

I have the latest Version 4.4.4.

In trying to learn how to use Basecamp, I've been going through some of the how to videos, as well as the on-line help file, and all though they do help a little they don't seem to match what I have within Basecamp. In other words the video says to click on such and such and either I don't have the icon or menu choice the video gives, or if I do have the particular icon or menu, when I click on it the choice the video says to use isn't always there.

For example, when it talks about creating a new Route, it doesn't give any information on creating a Starting Point, it just says to start clicking to begin a route and click along the route based on where I want the route to go. It would seem to me the proper way would be to Click on your Starting Point, and then the Ending Point. Then once this is established to create your Waypoints and Stop Points along the way. Is there a particular order I should do some of these things?

Is there somewhere that I can get a good tutorage?? of examples on how to do things?

I also have another question. I know I can connect my nuvi 2797LM and Basecamp will automatically pull the map off the nuvi and display it. What if I don't want to connect my nuvi to my computer, but I want the same map data on Basecamp all the time. Can I have Basecamp save the map from my nuvi to my hard drive so it will always be there?
It references that I can go to Garmin and order a map that I can download, or I guess, purchase a DVD and install it so Basecamp will have it's own map data. One issue that I see with this is not knowing for sure which of the many maps on the Garmin Website is the right map. Garmin's web site is a little confusing in this regard.

Hope someone can give me some answers.