As am guide/instructor you can take advantage for ski lessons from me (donation) either some ski school (€) from there. About rent a ski/snowboard over the slops at the top. So if you want we'd meet up on the funicular departure from Ribes de Freser to Núria. FYI there's a train from Barcelona to Puigcerdà direction very early in the morning. Let's ski together then, cheers!