There are two basic points, I would like to cover.
(1) Why would (or should) a new user, use or learn XEmacs?
* Known problem issues in learning XEmacs.
(1) Learning the ackward keyword control sequences.
(2) Understanding the "meta key" business, besides control and shift.
(3) Why does it start-up, so slow?
Also, XEmacs isn't just for Linux people. It blows Notepad away. Except for the usage of control keys. It is a very direct editing text editor.
My motive in sharing XEmacs skills with you. Isn't just about text editing. XEmacs is such a powerful editor. It has many non-text related features. (Shows a calendar, can check your email, and so on.) Besides, you can customize it and change it, too!
In response to question 3. There is a lot of power under the hood. Yes, start-up time can be lengthy. However, if you simply run it all the time. Then, the performance hit should be less, for new file edits.
Yes, learning the keyboard sequences is the hardest thing. Although, there is an excellant menu system and "sometimes." It is seems only possible to find the magic command (or option), in the menus. Once, you know the keyboard workings. It isn't so bad. (Plus, you can even change this. If you want? However, I won't be covering that for a few months.)
Lastly, about the keyboard sequences. It is a rather long topic. Once, I have prepared a straighter list, for you. I'll place parts of it, here. Then, we can all go with it.
GlR
PS. XEmacs has an excellent tutorial in the editor. Enter the "help" menu, select the "tutorial" option.