With your valid residence permit you can travel to Spain.
You should take your recieved application confirmation (Poste Italiane SpA) with you.
From the authorities there should be no problems when returning, but some airlines act as if they have more to say in the matter than they in reality have.
Printing out the status the progress of the residence ...
The go-to resource for ferries is ferrylines.com.
When I search for ferries from Italy to Greece, it lists 26 results:
We can readily see some of them are departing from the north. Specifically, there are six lines from Venezia to Greece:
You can use their search engine for yourself to look for further alternatives and information. If you feel ...
You have few possibilities:
The most used option, the ferry: Ancona to Igoumenitsa or Patras, twice a day. I do not know if Ancona is too distant for you, but you should definitely check such ferries: they are frequent.
You may find also some ferries from Venice to Igoumenitsa and Patras, three times a week.
I cannot find a route from Genoa or France (no ...
The Reporting your presence is required in Italy, which the host must comply with.
The likelihood is high that they are asking for the passport image beforhand so that they can fill out the form (twice) so that all you have to do is sign it upon arrival.
If you don't want to do this, print out the corresponding form, fill it out properly and tell them ...
For Italy, this is no problem for the ages 15 to 17 (inclusive)
up to 14 (inclusive) a form is needed that must be varified by an Italian Consulate
For both (Italy and Switzerland) is is advised to get a written consent from the parents which should include your name and address being visited.
Theoretically this could also be asked for when leaving the ...