Reorganize practices around files out of the "Exceptions" section

README.adoc

@@ -2165,6 +2165,12 @@ rescue StandardError => e
 end
 ----
 
+=== Standard Exceptions [[standard-exceptions]]
+
+Prefer the use of exceptions from the standard library over introducing new exception classes.
+
+== Files
+
 === Reading from a file [[file-read]]
 
 Use the convenience methods `File.read` or `File.binread` when only reading a file start to finish in a single operation.
@@ -2288,10 +2294,6 @@ end
 FileUtils.rm_f(path)
 ----
 
-=== Standard Exceptions [[standard-exceptions]]
-
-Prefer the use of exceptions from the standard library over introducing new exception classes.
-
 == Assignment & Comparison
 
 === Parallel Assignment [[parallel-assignment]]