This is a usual crossword puzzle. Here is the completed grid:
1 A | 2 D | 3 L | 4 B | 5 J | 6 K | 7 P | ||||
8 C | O | 9 O | 10 R | 11 D | I | N | A | 12 T | E | S |
13 C | R | E | A | M | 14 I | C | R | Y | ||
15 T | I | A | N | A | 16 N | M | E | N | ||
17 O | G | R | E | 18 O | I | L | E | 19 R | ||
20 R | A | 21 C | E | L | L | S | ||||
22 O | M | 23 S | 24 S | A | ||||||
25 W | I | T | 26 H | 27 O | 28 D | 29 D | ||||
30 O | E | N | O | E | ||||||
31 H | 32 O | R | R | O | R | S | 33 H | 34 O | 35 W | |
36 A | R | E | B | R | A | I | L | L | E |
Note that 21 Across, 25 Across, 8 Across, and 36 Across are clued as "How to solve this puzzle." Their answers are CELLS WITHODD COORDINATES AREBRAILLE. Ignore all cells except those whose x and y coordinates are both odd (starting from 1 in the top left). This yields a 6x6 grid of black and white cells. Interpreting this as two rows of three braille characters yields the answer SEARCH.