European UCITS ETFs are mostly considered to be a good starting point. ETFs are a curated basket of stocks that can be bought in one single order. There are many options out there ranging from a worldwide index or a particular theme-based ETF. As an example, you can become the owner of many iconic dividend aristocrats by buying the Fidelity Global Quality Income UCITS USD Inc ETF ($FGQI). DEGIRO offers a wide selection of ETFs and FGQI can be bought there.