Welcome to VORTEX-USA. This is your first post. Edit or delete it, then start posting!
If you need some information to get you started, here is a Getting Started With WordPress website that may answer some of your questions.
You may also find answers in the Publishing Help section of your admin interface, in the upper left corner:
Posts vs. Pages
You may wonder: what is the difference between a post and a page?
Posts
Posts are entries listed in reverse chronological order on the blog home page or on the posts page if you have set one in Settings > Reading. If you have created any sticky posts, those will appear before the other posts. Posts can be found in the Archives, Categories, Recent Posts, and other widgets. Posts are also displayed in the RSS feed of the blog. You can control how many posts are displayed at a time in the Reading Settings. The URL for a post includes the date the post was published like this: http://example.com/2008/11/30/post-title/
It is not uncommon to include links to important post categories on a menu bar. The classic example would be a link on your menu bar to the “News” category.
Pages
Pages are static and are not listed by date. Pages do not use tags or categories. An “About Us” page is the classic example. Pages are frequently linked from a menu bar. The URL for a page looks like this: http://example.com/page-title/