Taking a quick look at your code, I do have a couple of questions:
What's with all the redundant meta tags? Rating is not at all important. Revisit after? Let them come as often as they like! The robots meta tag? Indexing pages is what they do by default. That tag is not required at all.
Why do you care if the page is cached. Being that it's informational and not likely to change, I'd think you would definitely want the SE's to cache it.
HTML Code:
<META NAME="RATING" CONTENT="General">
<META NAME="REVISIT-AFTER" CONTENT="14 DAYS">
<META name="ROBOTS" CONTENT="ALL,INDEX">
<META HTTP-EQUIV="expires" CONTENT="0">
<META HTTP-EQUIV="pragma" CONTENT="NO-CACHE">
Being that your site consists of a limited number of tutorials, it's going to be tough to rank well against entire sites devoted specifically to software engineering unless you can develop a section devoted to software engineering and get a bunch of inbound links to your content.
Looking at your Domain info, it's still a pretty young domain. Let it age for a while, acquire some more inbound links, add more content pages and things will improve. Again, you are competing with some well established sites for some pretty valuable search phrases. You'll need to establish the site as a resource before it starts ranking well consistently.
I wonder why you've opted to default your home page to visualbasic.freetutes.com instead of simply freetutes.com. Any specific reason? I'd tend to think this might pigeonhole you into search results related specifically to visual basic when software engineering and design can encompass so many other programming languages.
Regarding the Yahoo! listing, it reads a little too spammy.
I'd recommend a few small changes.
Why recommend the changes? It reads more naturally and doesn't seem to focus solely on your targeted search phrase. It's already in the page title and <h1> headings and seems to me like too much of a good thing. Better to provide a more generalized page description and target a more broad range of search phrases than to overdo it around one single phrase.
That's my .02