Dontbegin - With 40- and 60-across, a cautionary message

Word by letter:

• Dontbegin - Letter on D
• 1 - st. word D
• 2 - st. word O
• 3 - st. word N
• 4 - st. word T
• 5 - st. word B
• 6 - st. word E
• 7 - st. word G
• 8 - st. word I
• 9 - st. word N