There are 2 baby or satellite  galaxies that are considered part of Andromeda. They are known as M32 (sometimes named the Andromeda Nebula) and M110. M32 is the bright fuzzy ball to the lower left of Andromeda's central core. M110 is the larger and more diffuse elliptical galaxy to the lower right. Eventually these two will become part of Andromeda. It is thought that large galaxies like Andromeda and our Milky Way grew as big as they are by the absorption  and incorporation of many smaller galaxies, some of them like those you see here.

Andromeda can be found from late August to early April, but the best time to look for it is in the eastern sky of autumn. Look to the Northeast and find Cassiopeia, the "W" in the Milky way. Look to the right and find the 4 bright stars that form the Great Square of Pegasus. Take the left hand corner star of the great square and count 2 bright stars back toward Cassiopeia, "star" number 3 is Andromeda. If you have any question whether you've spotted it, check it out with binoculars, it will then be unmistakable. Hope you find it :-)

4" F5  refractor telescope piggybacked on a LX200 Meade scope tracking scope, Camera Canon 300D at prime focus
4 of 120 sec exposures, ISO 1600
4 photos averaged together, then brightness and contrast enhanced, This is a full frame crop of M32 from the M31 image