I found a pretty good Wordpress Security Whitepaper over at BlogSecurity.net. I followed most of the techniques, especially those that concerned protecting the wp-admin directory, since that's what got me hacked last time.
Also, today, while installing 8 GB of RAM into my virtual server and after more than a decade of taking computers apart, I finally figured out an easy way to keep track of those tiny computer screws. I took a Post-it, turned it upside down and used the glue strip to keep the screws all in one place. Granted I try to stay away from hardware because I tend to catch it on fire, but I can't believe how long it took for me to figure that out.