Hi and welcome Natalia!
I glad know that you want use Dédalo for your project.
First at all you will need a server with GNU/Linux as Ubuntu and install Dédalo, you can follow the install documentation here.
When your Dédalo server will ready, you will need to configure it, you can follow documentation here.
In config you will need to specify what field of Cultural Heritage you will manage (Tangible, Intangible, Memory) adding specific tld for this kind of Cultural Heritage to the ./config/config.php file.
Install and config Dédalo requieres a IT person with knowledge about servers / GNU Linux in general way (Dédalo requiere PHP, Apache, PostgreSQL, MySQL, etc)
When Dédalo is installed and running, you will have a manage interface that can handle the catalog and publish it. To build the website, you will need a web designer to connect to public API, get data and render it in final webpage.
This channel, our Ágora, is used to ask general questions and issues, but it's not a profesional service.
If you need profesional help, you can contact with @Gerard_La Foneria, @Julián, @cbrianso...