From the rulebook section II - Constructing your deck:
From the nine power cards chosen, each player should assemble three
sets of three cards each. The first set immediately forms the
player’s hand, as it corresponds to the cards with which the players
will begin their tournament.
The second set is placed under the
Library II token and will be added to the player’s hand during the
second year of the tournament. As for the third set of power cards,
it is placed under the Library III token and will be added to the
player’s hand during the third and final year of the tournament. At
any point during the game, players can look at the power cards
Emphasis mine. Assuming I've understood your question correctly, there is no bar to looking at your cards for year two and year three to remind yourself what they are.