Hi Steve,
http://www.sitepronews.com/ helped me a lot to learn about SEO and webmaster tips & tricks in general.
You can subscribe for their newsletter.
It is better to have a keyword in a domain but you can include your keyword in the Url like http://www.somedomain.com/your keyword.html, too.
Link exchanging is important.
Please LE with my site at http://www.cyberspace-casino.com/webmasters.html.
Some affiliate programs have screenshots of games others will allow you to use their site’s graphics.
Good Luck. 