By using an emulator.
Depending on if you want to download it or not, . You can also download an emulator and rom of Minish Cap on coolroms.com so you can play it offline.
You should get Oracles of seasons the minish cap rather the links awakening.
you dont get a shovel in minish cap you get the mole mits which let you dig also in the wind ruins.
You have to get the power bracelet.
in the library.
If you want to
my guess is about 10.
By getting a life.
zelda the minish cap
In the Temple of Droplets
You need to get the flippers.