There are three types of Standard (non Cryptic) crosswords available. The solutions include a full explanation of all clues.
General – these are (mostly) straightforward clues; although sometimes with a general knowledge bent or concentrating on a topic.
58A_General
58A_General_SOLUTION
Themed – these have clues based (sometimes somewhat tenuously) on a particular theme, in this case Film.
15A_Themed_ChildrenFiction
15A_Themed_ChildrenFiction_SOLUTION
Twist – these have twist in the nature or structure of the clues making the puzzle typically fairly difficult; the nature of this twist will vary by puzzle.
68A_Twist
68A_Twist_SOLUTION