[Koha] Koha errors

I am installing koha on debian 5. when Im running these commands Im getting problems $ sudo dh-make-perl --build --cpan Class::Adapter && sudo dpkg -i /libclass-adapter-perl_1.05-1_all.deb $ sudo dh-make-perl --build --cpan SMS::Send && sudo dpkg -i /libsms-send-perl_0.05-1_all.deb and plz sent me best and easy documentation page, from where I can follow instructions as I m new to linux plz reply fast Nouman +923337262979