Easy enough. Here’s the options you have as a tiefling.

https://dnd5e.fandom.com/wiki/Tiefling

Here’s a page you can read up about bards.

https://dnd5e.fandom.com/wiki/Bard

If you want a quick and dirty way to figure out what a bard does and their abilities here’s a crap guide to d&d bards because I’m a filthy thief who can’t be arsed to make original content.

[youtube]https://m.youtube.com/watch?v=qiHXxrCB5yk[/youtube]