The answer grid, followed by the clues in the order presented, is as
CRYBABY DOMENICO ABLA PROVERBS MAYPOLE TALON TIBETAN ALLIUM VIDEO MODAL HORACE NUEVO HYDRIDE ILIAC ALTRUISM GELEE FUNYUN RULA CLING GLOBOSE ABILENE ALDRIN ANON NEMESIS
USE ME NARC UNHOLY MARLBORO LASSOED LLULL RUIS ANGELENO OBOL DIDN'T MEDICI BUOY A FACT ENEMY MAYPO LET ALONE CINERARY NAIAD NOVEM CUBA LIBRE GANDHI BILE INGA IVES VORPAL I BET
To read the "B6/6b/2a/C1/10a 5a/A6/9b 7a B2/D2", if the pair starts with a letter, it's a Band answer; if it starts with a number, it's a Row answer. Take the nth word appearing in order in the Band answer, or the first or second word ("a" or "b") in each Row answer. The answers taken in order are LLULL/ALLIUM/TIBETAN/INGA/NUEVO FUNYUN/OBOL/RULA ILIAC ANGELENO/MARLBORO. Reading the initial letters of each word forms "LATIN FOR I AM," which is SUM, the answer.
The desire to shatter a pane of glass is a clue to use Windows to train
this. Using the overlay from the Whoa! I Know Windows! cryptic
and reading through the square holes gives you this:
Reading from top to bottom, you get GAHLYCRB. Adding that to SUM by interweaving the two words without rearranging any letters gives the final answer, GASHLYCRUMB.