Advice for web application technologies / architecture

I decided to start to lea web programming and as a first serious project I want to build a stocks/cryptography portfolio, where user sign in and add their holdings of specific stocks/coins. Users can see the current evaluation of their portfolio, or inspect various types of charts. I would like to host my app in the cloud, so that everyone on the inteet can access it. Such sites(with lots of other features) are coinmarketcap.com or coingecko.com .

I have no idea what technologies to...

Advice for web application technologies / architecture WordPress ...