I'm working through day 1.
https://compudanzas.net/uxn_tutorial_day_1.html
This is the final code after the first day.
( hello.tal )
|10 @Console [ &vector $2 &read $1 &pad $5 &write $1 &error $1 ]
%EMIT { .Console/write DEO }
%NEWLINE { #0a EMIT }
%PRINT-DIGIT { #30 ADD EMIT }
|0100
LIT "h EMIT
LIT "e EMIT
LIT "l EMIT
LIT "l EMIT
LIT "o EMIT
NEWLINE
#09 PRINT-DIGIT
NEWLINE