Why? What about using "standard copy/paste key bindings" (which are now active by default) and clicking your way through the graphical icons and the drop-down menus?
But it's probably difficult to get fancy effects without learning TeXmacs more deeply. Unfortunately I can't compare with LyX (I happen to be a TeXmacs believer... but by no means a guru -- not being "motivated" enough to study the manual!)
An important thing is to take notice of the key binding for a command when you've finally found it in the menus. Also, if you remember a LaTeX construct, try using it -- sometimes it's available under the same name, e.g. \setminus.)
The Singularity Institute needs to hire 1-2 people who are fluent in LaTeX to help us transform past and future SI publications from looking like this to looking like this.
As with the remote researcher positions, pay is hourly and starts at $14/hr but that will rise if the product is good. You must be available to work at least 20 hrs/week to be considered.
Perks:
If you're interested, contact luke@intelligence.org and describe past LaTeX work you've done, with attached PDF examples.