You can install and use Views module.
It will allow you to create a page (and define the path, for example "/blog" or "/news") on which you can display a list of specific content-type. You can also tell which fields you want to display in that list (maybe you don't want to display all your content-type's fields). You can rearrange it as you want, etc.
If it seems good for you, here is an example for you to create your NEWS page:
Delete all menu items you've created because it will be created automatically!
Install Views and activate it.
Go to Admin>Structure>Views and "Add new View".
Set your View name as "News".
Set "Display CONTENT of type NEWS" and maybe set a sorting rule if it pleases you.
Check "Create a page" and give it a name, like "news", and a path, like "yoursite/news".
Choose a display format, like "Unformatted list", which I think will suit perfectly for a list of news. If your news contents are long, maybe choose to display only "teasers" or "titles" previews. The users could access the entire content by clicking on the titles if they want to.
Choose to display comments links or not.
Set the number of news you want to display per page (there will be a pager system if you let "Use a pager" checked).
Check "Create a menu link" and choose in which menu you want to display it (maybe "Main Menu"?).
Don't check "Create a block" for now. You only want a page initially.
Save & exit for now, and check the result by clicking on your new menu item "NEWS".
That's how you create a very basic View of content-type. You can do a lot of configuration after that in your View panel but it could be very specific and complex so I suggest you to read the documentation and find by yourself.
Please excuse me if my answer sounds child but I understand that you're still pretty new to Drupal and I just wanted to help "step by step".