Using HTML for design is a tad obsolete and clunky nowadays, but it'll work for the most part. However, CSS, is the better way to go. font-style: Italic; would be the code to set a text italic.
The author of the article is the one who decides what, if any, illustrations will be included. In this case, it looks like the author just didn't think pictures were...
You should use a glue that is specifically for glass, such as 9001 High Strength Adhesive. This is not too expensive and can be found at a craft store. You...
Villagers will sometime trade for string. Witches have a chance to drop string upon death. Steal string from other players. Use Creative Mode/Commands.
You cannot see it if someone would like to add that you were suggested, but you see in the settings that you are suggested. You can also disable it there.