A lot of folks here ask how to learn architecture. I really love this intro statement from "The Architecture of Open Source Applications"[1] and higly recommend reading the book!
"Architects look at thousands of buildings during their training, and study critiques of those buildings written by masters. In contrast, most software developers only ever get to know a handful of large programs well—usually programs they wrote themselves—and never study the great programs of history. As a result, they repeat one another's mistakes rather than building on one another's successes."