https://packages.debian.org/stretch/emacs
Emacs is a really nice editor, and has a lot of features that make it much more
then just a text editor.
For some body starting out new, I suggest trying various, then decide what you
prefer.
Unfortunately Bluegriffon is not in the Debian repositories, however it is available for Linux, and I have heard others recommend it,... I would have suggested one called "CofeeCup", but it is only available for windows, as far as I know,..How ever it is interesting to note even the Author of CoffeeCup, is using Griffon now,..
at least that is what it says on the front page.
I can not say I have tried Griffon, but it looks interesting, I may even give it a
try myself,.. thanks
======== edit====
The very first webpage I ever did, was quite some time ago, when I saw some
articles and news letters on usenet, from
Tim Berners-Lee.
I was looking for a way to link various documents, and make reading large documents easier, on Dos, and the html , (hyper text markup language) interested me.
Trying to make a long story short,.. since all I had at the time was Dos, and the Dos editor, that is what I used.
I do not remember the exact year any more, and the website no longer exists, but any way it was done entirely with the dos editor. Later over the years many "html" editors and website software has been developed, and I have tried a few.
Coffee Cup is one, they offer a good free demo, if one pays for the software, the licensed , paid version has a few additional features. I had no problems using
the free version on some of the earliest versions of "wine",.. I have also tried a few others, but ended up being more comfortable with just a plain and simple
text editor, so ended up going back to that.
In any event, others like more elaborate and specialized software, so really
after all said and done, the best thing the OP can do is try various techniques,
and there are many, then decide what they like best.