List menu and sub menu I have a "Opinions" in my main menu that appears in main menu block in first page. I want to do something that when I click to "Opinion" in goes to a page that has 2 links: "articles" and "others". I mean I click to Opinions and after that I can select articles or other and they go to article page and other page (articles and other are my taxonomy terms)

I don't know what should I do?
If your question is not what your title says consider this:
Module you need is views module.


Create a view of article type and keep the display of  your view type as page,this view will list all nodes of article content type.Give page path as "articles" or whatever.
Create another view to show taxonomy terms of type all/vocab, this view will also be page display type.Give page path as "show-taxonomies" or whatever.
Create a menu block with two menu items "articles" and "others" link them respectively to the views page path you have set.
Now put this menu block in main content region with path specified for block display as "opinions".