To create a new Page, log in to your WordPress admin with sufficient admin privileges to create new page. Select the Pages -> Add New option to begin writing a new Page.
Now, give a suitable title to your page as per your requirement and start adding content using Visual/Text editor given there. In text editor, you have to use html
Coming back to the page templates, templates as all of us know that often used for something that is pre designed with a specific purpose and which can be reusable with some modification. Page Templates acts in the same way! These are the pages made on some obvious need of business irrespective of their type. You can directly use these pages by just selecting the template from the drop down available in Page Attributes section in WordPress create new page. You can also add some content, if you want to show that on your page along with the pre specified content and design of the template.
As the page templates and pages are important, so do the URL of your pages! Do not ignore it. These URLs or say permalinks are very useful when it comes to SEO, so you can increase the search rank of your page too. Other than just SEO, you can place these links wherever you want on your site and redirect your users on a particular page. These links can also be given in the widgets itself wherever it allows. You can do this as per your requirement. WordPress is very easy to use medium to build a website and run it successfully without having much technical knowledge! Yes, you do not have to be a programmer to build up your site and that is possible with the WordPress and the themes that provide you the ready made well thought design and functionality and you can have a complete professional site with some minor efforts! Also, when you purchase the premium theme, it often comes with support for some limited time and they always help you if you are stuck in between.