Delta Mon is a fourth-magnitude star 115 light years away, which makes it pretty typical for the stars of this constellation.

Delta Monocerotis is found by drawing a line between beta Monocerotis and Procyon; a little over half way along that line (toward Procyon) you'll find delta.

If you now study this region closely with the naked eye, you'll find that Procyon, alpha, and delta form a small asterism, a somewhat skewed square. The other corner of this square, to the east, is zeta Monocerotis.