Welcome to Linode!
You've definitely made the right choice for your first 'self managed' VPS.
To answer some of your questions:
LunarOrbit wrote:
1) With my other host (who I will be keeping my sites with until I understand Linode) I am hosting 3 domains on one account. Is it difficult to set something like that up here? I only have one domain pointed at Linode right now, and I'm not sure how to add more. Do I just add another DNS entry?
In regards to the additional domains, you will need to point them to the Linode name servers just as you did with the first one, and create a new zone for each domain.
You can easily configure Apache2 to use virtual hosts for your domains. Take a look at the following link for a guide on how to do this:
http://www.debian-administration.org/articles/412LunarOrbit wrote:
2) How do I access phpmyadmin? I'm assuming it is more complicated than just going to
www.mysite.com/phpadmin otherwise that would be pretty insecure. But without cPanel installed I'm not sure how to access it.
It is actually that simple.
As root, run the following command:
Code:
apt-get install phpmyadmin
Navigate to
http://www.yourdomain.com/phpmyadmin, and then enter the following credentials:
Code:
Username: root
Password: [your MySQL password you set for root]
If you have not set a password for MySQL or have forgotten it, then follow these steps to have it reset:
http://www.cyberciti.biz/tips/recover-mysql-root-password.htmlLunarOrbit wrote:
3) What do I need to install to get email working? Will there be a webmail interface or will I have to add accounts using SSH? I have to admit, I'm not a fan of command line interfaces.
Depending on the specs of your Linode (and what else you intend on running on it), this might not be a feasible option as it will chew up a good chunk of your resources. As you are new to this, you might be interested at looking into having your mail hosted using Google Apps:
http://www.google.com/a/
It is free, stable, has excellent spam filtration, and provides 7GB+ in storage. In addition, it also provides POP3 and IMAP support, and has an easy-to-use web front end - So it sounds exactly like what you're after.
EDIT: hybinet beat me to the response! (I spent too much time tinkering with different formatting

)