Alright, what would you like help with? I'll give you some basic outliners here though anyways.
For adding line breaks, put < br >, but remove the spaces on either side of the br
For adding files, put File:Example1.png, in that exact syntax, though with an actual file name of course
However, when adding images to the infobox field "Image =", do not put the brackets of the "File:" part, just the file name and format
That should cover the basics, do let me know if you need any help though, and if you want to hit me up over discord for more help that way, my tag is borkercausemorgancatholicchurch, and my other accounts can be found on my userpage, if you click on my blue name on this comment.