No manual, no online reference:
C
VB
Perl
SQL
No manual, but peeking at the online help
occasionally:
Java
PHP
Python
C#
SAS
Pascal
Minimum of 2 hours of prereading,
but not more than 6 hours:
RPG
JavaScript
COBOL
No Clue:
C++
Delphi/Kylix
ABAP
IDL
Lisp
Fortran
Ada