Wikinews portals are Wikinews pages intended to be the main pages for contributors and readers that are interested in specific topics or regions, providing them with a means of viewing news stories related to the specific topic and (in some cases) a means of submitting such articles.  Content of portals are of two types: region portals and topic portals.  Both rely upon individual articles' use of categories and templates in order to function.
Only create a portal if you intend to maintain it. 
You can follow the example of the Portal:Environment.
To create a new portal on the topic "Topic" follow these steps:
1. Create a new portal at [[Portal:Topic]] (where "Topic" is the subject of your portal) and enter the following text
Save.
2. Create two subpages:
a) Portal:Topic/box-header with the following text
Save.
and b) Portal:Topic/box-footer with the text
Save.
3. Return to your portal page Portal:Topic and begin editing (general instructions on editing a portal are below). Basically follow the red links to create sub-pages that will fill the boxes.
4. Place a link to your portal at the top of the appropriate article (of the same name) by placing a {{portal}} there, or place {{portalpar}} at other various pages. List your portal at {{portals}} and {{main portals}}
For an explanation of how and why this format works go here.
The box portal allows you to edit the portal without editing the main portal page. Simply follow the red links to the sub pages and enter the information there. These sub-pages will be displayed on the main page.
If you wish to add a section (box) using the regular codes, go to your portal page (e.g. [1]) and simply type in:
where
The following code:
results in -->
Portal:Computer and video games/box-header
Portal:Computer and video games/Featured
Portal:Computer and video games/box-footer

The following code:
Wikinews:Wikiportal/Computer and video games/box-header
The following text will appear in the box. This text can be placed on the portals main page and edited there.Or, alternatly placed on a sub-page of the portal, which is explained below.
Wikinews:Wikiportal/Computer and video games/box-footer
...when used at the computer and video games portal, will result in what is displayed to the immediate right. -->
The exact same code, used at other portals, will create a box with the exact same content, but the colors may be completely different. This is because each portal has templates at:
that add color information, and the pass all the work along to the Wikipedia:Wikiportal/box-header and Wikipedia:Wikiportal/box-footer templates, which compose everything into a standards-compliant and cross-browser box.
Region portals provide a view of Wikinews that is restricted to stories that are of interest (although not necessarily occurring in) a specific geographic area.  Wikinews provides region portals for regions of the world, individual countries, states, provinces, or regions of those countries (such as the individual states with in the United States or the individual Länder in Germany), counties, cities within a county, and eventually neighborhoods within each city.
A region portal comprises six things:
The actual portal is in the Portal namespace. It uses the <DynamicPageList> mechanism to automatically generate lists of all of the latest articles of interest in the region under various conventional topic headings (Politics and conflicts, Economy and business, Disasters and accidents, Science and technology, Crime and law, Culture and entertainment, Obituaries, Sports, and Wackynews) as well as a list of the latest articles of interest to the region across all topics.  
It also transcludes the template for the lead article, providing an edit link to edit that lead, and transcludes any templates to link to enclosing or enclosed regions, allowing readers to zoom out to larger regions, to zoom in to smaller regions, and to navigate to neighbouring regions.  (For example: Template:United States menu transcludes both a list of the states in the U.S., for the links to the portals for the states of the U.S., and Template:North America menu, for the links to the North America portal and to the portals for the other countries in North America, as well as the contintents, for which Template:North America menu in turn displays the content of Template:Continents menu).
You must copy the Wiki code fom another portal (United States is standard) into the new region you want to create, and then replace all instances of United States with that of the region you are creating the portal for.
Using the United States, as a subdivision of North America, as an example:
In the event of name conflicts, the following rules are to be applied:
Topic portals provide a view of Wikinews that is restricted to stories that relate to a specific topic, from anywhere in the world.  Wikinews provides a set of topic portals for the 9 primary topics that occur on all of the geographic portals, and for more specialised topics.
A topic portal comprises three things:
The actual portal uses the <DynamicPageList> mechanism to automatically generate lists of all of the latest articles of interest for the topic under the top-level gobal regions (North America, Central America, South America, Europe, Asia, Oceania, and Middle East) as well as a list of the latest articles of interest for the topic across all regions.
Some editors prefer portals that don't include the alphabetical list of all news stories at the bottom.  (And, conversely, some editors prefer portals that do.)  The redirect in the main namespace satisfies such editors.  Because of a quirk of the MediaWiki software, redirects to category pages display the category pages themselves but do not include the list of articles in the category at the bottom.  The redirect in the main namespace takes advantage of this quirk to provide portals without the article lists for those editors that like them.
The main namespace article must be a redirect, and must not be a portal itself, in order to exclude it from any dynamic page list selection that selects developing stories from the main namespace.  Redirects are excluded from dynamic page lists.  The actual portals themselves should always be created at the category pages.
Note: this list does not yet follow the edited guidelines, following community support for Category pages to display all stories and not be a portal themselves. When creating new portals, please place them in the portal namespace and create a DPL on the category page to display all stories on the category (rather than the automatic a-z list). Please change the links below for those portals that have been created.
(Other geographic portals exist.  They do not yet follow the scheme described here, however.)
In alphabetical order:
The portal scheme using a Portal: namespace has been implemented as of 01:48, August 12, 2005 (UTC).
Wikinews:Category Portals