OpenLayers
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What is OpenLayers?
OpenLayers (http://openlayers.org/) is Javascript code you use on your Web server. You reference it from your own HTML and Javascript based pages, to put maps into your web site.
Docs for programmers: http://openlayers.org/en/latest/doc/
OpenLayers is very stable code. Version 5 was recently released. It supports tiled raster and vector layers. It supports editing. It seems to support everything that I want to do.
Books
OpenLayers is so popular that there are even books about it! None for version 5 yet that I know of. I removed all the books I had listed here because they were all more than 2 years old. :-) You can look in the History tab if you really want.
The Marin library has ebooks via Safari but they are for version 3.
I bought OpenLayers 3.x Cookbook and I am going through it. Yes.. OL 4.x is out, but the big break was 2->3, 3->4 is a smaller jump and there aren't books on 4 yet.
My simple example
Sometimes I have http://maps.wildsong.biz/ up on Bellman. Not right now.
Currently I am using Node.JS and testing on my desktop.
You can see code I have running here: https://github.com/brian32768/OpenlayersTests