I'm a playing around with website building by following the tutorials of user "createthenet", a.k.a. Timothy, on YouTube. The steps to follow are simple enough, but I notice that what he often does is begin with a template, then build pages off of that template.
Not to advertise on his behalf, but I'll use his site as an example. When I click on "Welcome", "About", "Tutorials", etc., most of the site, such as the header area, remains the same.
This saves work when building the site, but suppose I had 50 pages all with the same header area. Then if I decide to change the header area. I'd have to modify 50 files.
Is there a better way of achieving this so that I can modify the header in one file, and it'll be reflected in the other 49?