in reply to
fetching and storing data from web.
For someone new to Perl and, particularly someone new to programming, you are tackling a fairly ambitious project. The first place you should visit is the Tutorials section and gain a little general Perl and programming knowledge. When you understand what a module is and how to use it come back and take a look at LWP::Simple, HTML::TableExtract (given it looks like you want to extract data from a table) and maybe Excel::Writer::XLSX or one of the other Excel modules to write the data out as an Excel file.
True laziness is hard work