To me, the answer is dependent upon your long term goals.
I think everyone who begins to play wants to enjoy playing, and there are any number of approaches to that. You can play for your own pleasure and enjoyment, in which case, I'd say, chose the composer whose music most appeals to you and start with the most "etude" like of their pieces. It may be songs for children, pieces written by the composer to teach them our kids (Bartok, e.g.) or simplified versions of your favorite classics.
The other approach is to build a foundation of technique and theory, which will lead to more professional performances of more advanced pieces. For this, I think a good teacher is essential. If you live in a city with a music school, you can frequently find teachers in a community music program there. Alternatively, you may work your way through the ABRSM curriculum.
Whatever your choice..enjoy!