To buy cryptocurrencies, you will need to open a cryptocurrency exchange account and deposit funds using either a bank transfer or credit/debit card. Once the funds are available in your account you can then use them to purchase any of the supported coins and tokens.
To store cryptocurrencies, you will need to download a wallet that supports the particular currency you want to store. After downloading the wallet, you will need to generate a unique address associated with that wallet so that you can send, receive and store the crypto assets. As well as wallets, there are third-party services that offer additional security for your crypto assets. These services can include cold storage solutions and cryptocurrency escrow services. It is important to remember that the security of your crypto assets is dependent on the security measures taken by yourself. It is important to always back up your wallet files in a secure location, use strong passwords and have up-to-date anti-virus software installed on all devices used to access your crypto assets.