Which part seems tough? What are you having problems with? My suggestion would be to use Mojolicious::Lite over CGI. The documentation is great, and covers the concepts involved in learning Perl, web technologies, and a quick way to get results. Without a specific problem to fix I can only offer advice on how to get started. See also DBI/DBD::Oracle, PerlMonks for the Absolute Beginner and How do I post a question effectively?.