I need help with welcome message

How do i separate lines? For rules and stuff. And how do I list things? Like I saw a command with dots
How do I underline?
And how do I change the font? <font face=“font here”> doesn’t work.
And i have searched a bit and these questions weren’t answered to my understanding

< br > or < p >

< hr > to make a line like this:

and list is:


Here you can learn everything about HTML https://www.w3schools.com/html/default.asp

I just took a quick look at this guide and ended up learning a thing or two that I didn’t already know.