This collection of notes and sample codes are based on my personal experiences with Perl on both Unix and Windows systems. Topics covered include binary file, CGI, class, client server, DBM file, debug, directory handle, file handle, file test, free, function, hard reference, IIS, Internet, language, Linux, module, MySQL, name space, object, object method, online, open directory, open file, package, Perl, regular expression, RPC::XML, sample codes, SOAP, SOAP::Lite, socket communication, soft reference, split, subroutine, performance, TCP, XML, XML-RPC, XML::Simple.