Cantrips
You learn additional bard cantrips of your choice at higher levels,as shown in the Cantrips Known column of the Bard table.
Spell Slots
The Bard table shows how many spell slots you have. You regain all expended spell slots when you finish a long rest.
Spells Known
The Spells Known column of the Bard table shows when you learn more bard spells of your choice. Additionally,when you gain a level in this class, you can choose one of the bard spells you know and replace it with another spell from the bard spell list, which also must be of a level for which you have spell slots.
Spellcasting Ability
Charisma is your spellcasting ability for your bard spells.
Spell save DC= 8 + your proficiency bonus + your Charisma modifier
Spell attack modifier= your proficiency bonus + your charisma modifier
Ritual Casting
You can cast any bard spell you know as a ritual if that spell has the ritual tag.