Good to see strokes being uninterred.

Wrt customizable context menus and other mouse-3 actions, see also Mouse3 (mouse3.el).

https://stackoverflow.com/q/77540230/729907

These might help:

• Highlight Dynamic Variables (dyna-show.el)
• Highlight Defined Lisp (hl-defined.el)

See (elisp) Excursions

https://emacs.stackexchange.com/q/79537/105

Also very basic, IMO:

• g X - go to buffer X’s point
• j - jump to diff number (prefix arg)
• ! - update (re-diff)
• C-l - recenter
• * - refine current region
• ## - ignore whitespace diffs

As /u/mickeyp said, Imenu should do what you want. That presumes that LaTeX mode in Emacs has set up Imenu in a useful way for what you want. If it doesn’t, you can do that yourself - define Imenu’s menus for the mode you’re using (e.g. LaTeX), to recognize the section headers you want, etc.

FWIW, setting something to #f in Emacs Lisp means you’re setting it to TRUE, not FALSE. Elisp is not Scheme.

https://emacs.stackexchange.com/q/79470/105

Learn Emacs Lisp on Emacs Wiki.

Do you see the problem when you start Emacs with emacs -Q?

Check your value of option default-frame-alist…

Is there a easy way to use emacs ?

Yes. Start it and type C-h t. Follow the simple tutorial directions.