Hi dude :)
My first post was very brief obviously.

The primary way I buy any cryptocurrency is with Coinbase: https://www.coinbase.com/join/598e2237eb342e008e8064a4 join with that link and get $10 free bitcoin when you purchase any amount of crypto worth $100 (recommend starting with at least $100).

When you have cryptocurrency in your wallet register an account on Binance and buy alt coins with your Bitcoin, Ethereum, Litecoin etc.
https://www.binance.com/?ref=10827659

Each crypto currency is stored with it's own wallet, and the Blockfolio App you see is simply a tracker, not a wallet.

Any more questions ask away will be making more step by step guides with better info etc.