As I mentioned before I have been out of the blogging/SEO mind set for about a year
Just with some initial modifications such as better CSS, regular updates and getting involved in the communities I enjoy a significant increase in traffic has occurred on this site specifically. So here are my methodologies at this point
Manual submission seems to be a long dead concept, however I still think it is absolutely the way to go despite the whole Web 2.0 notion that between Twitter and RSS feeds the world will take notice. However I am also a fan of WebCEO for that quick fix initial submission to SERPs (and yes that is an affiliate link, but the Free version is still great!)
Regular updates means just that. I recall Darren Rowse used to do his blog-a-thons where he blog non-stop for 24 hours and I commend his efforts, but outside of that if you can only commit to posting once a week just make sure you do it each week. Modern SE SPiders keep track of the regularity of updates and come to check at those intervals determined by statistical data, keep them fed and happy. Your readers don't want to come back to the same page each day either, if they know you'll be updating at a regular interval they will return at those intervals.
Keeping track of how users get to your site can leverage a great amount of insight as to whether what you are writing works or not. Keep an eye on the search terms users entered to get to your site and follow suit
Read those comments. Answer the questions and be a part of your own community