Exchange Traded Funds (ETFs) provide broad market exposure, they are a great avenue for diversification, they are comparatively cheap, they've historically preformed well, and they're easy to purchase.

So, they are ideal for passive buy-and-hold investors, for people who have small pots to work with, or for people who don't want to do a huge amount of research.

Plus, investment legend Warren Buffett is known to be a fan of them.

In the latest episode of We Need To Talk About Investing (investing basics you wished you'd learned in school), Erica and Rob discuss all about Exchange Traded Funds (ETFs).