Help! I want to change 3 column template into 2 column.

[Nima]

Hello! http://wealththroughwisdom.blogspot.com/ This is my blog and
haven't started anything yet. I want to remove the column on the left
side and turn it into 2 column. I searched on google and found topics
only on changing 2 column template into 3 column. I want main colum to
be little wider than it is now, right sidebar or column to be
completely at right side. Actually I want this blog to look more like
website. I want to have static home page. I read your blog post about
creating mini site on blogdoctor but this template is different and I
couldn't edit it. And I also want certain posts lets say articles
posts to appear on the sidebar when articles menu tab is clicked,
similar other posts to appear only when specific menu tab is clicked.
I may be asking too many solutions under single post, sorry for that.
If it is needed I will post on single topic at a time. I want to start
posting on blog as soon as possible.