sorry for quite long subject, but had no idea how could I make it shorter

Goal:
I created my own template on which I'm building website.
I want to transfer some content blocks from static html to be dynamically editable inside WB.
For example address data being shown in footer, which may change after some time (mostly phone number)
and should be editable using WB admin panel (not by manually editing template file).
Problem:
It may be achievable by using $block[N] definition and adding a section inside created subpage.
But I would have to create such section for every new subpage.
I don't imagine editing the same content on every subpage :\
Question:
Is there any
simple and ready to use solution to create one, editable content block, which may be put inside template code and displayed on every subpage ?
I'm not skilled in php, so I'm unable to create a droplet or code by my own.
Not to mention sql.
ps. sorry for my bad english