Let's start this discussion by telling you the basic SEO that you must apply on your blog,
1. Swapping your blog post tittle and blog tittle - The default is BLOG TITTLE | BLOG POST TITTLE but the best position is BLOG POST TITTLE | BLOG TITTLE. There are many different ways on how to swap it, there are many different blog platforms so I recommend you search on google on how you will swap these two, find a guide for your blog platform, e.g blogger, wordpress.
2. ADDING BREAD CRUMBS - Breadcrumbs is like this HOME>CATEGORY>Post Title. this is a good code :) you can also google it on how to add google crumbs into your blog.
3. SUBMIT A SITEMAP - you must submit a sitemap to google,yahoo or other search engines, this is to guide the robots into your site, so that they won't get lost :).
4. SUBMIT EVERY POST IN A DIRECTORY - when you post a new topic try to submit them in, stumble upon, digg, reddit or any other social bookmarking site , they will help you really.
5. BUILDING BACKLINKS - exchange links or let your co-bloggers link your blog if they find it useful but don't ever ever spam your links ok? its blackhat :)
those are the SEO that I applied in my blog and they are the basics too :).
NOW THE SECRETS ON GETTING A GOOD PAGE RANK IN ALEXA AND GOOGLE.
Do you want to know the secret? THERE IS NO SECRET!.. yes you heard it right, there is no really a secret on getting a good blog, the moves and routine that I do is what everyone or almost everyone is doing, I blogwalk, I write a post,. You must love your blog and take care of it. Write the way you are, I am writing what comes into my mind, even if my English is not that good, instead of copying someones work :).
I suggest not to copy someones piece of art, because google or other search engine will penalize your blog for sure. Try to be friendly to your visitors and co-blogger, work with them , and enjoy blogging .
These are the things that I can only say for now.
I am now open for consultations :), yes for free, I will examine your blog and suggest you what you need to do, my experience is SEO is not that great but I can suggest and see what's wrong with your blog.