15.53Your practical borrowed-chord toolkit

For now, memorize these in a major key:

IV → iv → I

In C:

F → Fm → C

♭VI → V → I

A♭ → G7 → C

♭VII → IV → I

B♭ → F → C

♭III → IV → I

E♭ → F → C

Those four will take you very far.