I want the same layout and branding for every page on my website for a consistent professional look. How do i make a template that will look the same for every page i make with it?

This help video will show you everything you need to know about making a new website including how to make templates https://www.youtube.com/watch?v=xHfNQOc6UNg. If you want something to be the same on all pages that use that template that is known as static content. To make static content you need to go to the template in object modeller and locate the atom that you want to make static. In its properties there is a box labelled static content where you put in whatever content you want to be static. After this any page that uses this template will have this content and if it is edited on any of these pages the changes will appear on all the other pages that use the template. Let us know if you need any more help.