There are many conservatory teachers here on the forum who will not delay in responding to you. In any case, to enter a conservatory it is necessary to take an entrance exam, therefore you must request the entrance exam syllabus and study it so that you can perform it. Zedef, I am sure he will clarify any of your doubts...
Ady, the thing you are asking about depends on many variables. For starters, are you thinking about Pre-Academic courses, Bachelor's degree (Triennio), or the two-year program (Biennio)?
In all three cases, an admission exam should be required; I will give you the example of Milan—I don't know if they are more demanding than other conservatories, but at least you have a precise point of view.
I forgot, clearly every conservatory is autonomous, so, apart from the difficulty levels which I hope are homogeneous throughout the territory, the ideal thing would be to first check the website of the conservatory you are interested in and then go to the administration office.
ady wrote:
..how many times a week do you go, for how long per day? what kind of study do they do?
It will depend on the programs, the availability of the teachers; in the case of group courses, there will be less leeway to adjust schedules to one's own needs, etc.