Alpha Sextantis is only a 4.5 visual magnitude star, but even so it's the brightest star in this constellation.

The star is twelve degrees due south of Regulus (alpha Leonis). Put Regulus at the top of your glasses and drop south one field of vision. Now move south just a bit more and alpha Sextantis will move into your field of view. Place this star at the northwestern edge of your glasses and you'll see three of the constellations stars: alpha, beta, and delta: binoculars.

The objects of interest in Sextans are found to the south: gamma Sex along with NGC 3115.