Go to Money On Chain dApp this is the url: https://dapp.moneyonchain.com/
You will see a menu allowing you to select your preferred wallet.
The first row gives you Web3 wallet options, the second row is WalletConnect (a connection from a mobile app), and the third row is the Hardware Wallet option.
Once in the dapp you can mint and redeem DOC and BPRO tokens. Minting tokens is like creating the tokens by yourself. In this process, you lock rBTC to be able to issue the equivalent in Money On Chain's tokens.
The difference between buy/sell and mint/redeem is that when you carry out a buy/sell operation, you do it with another subject, be it a person or an exchange (such as the TEX), and you exchange a token for another that already exists. On the other hand, when you mint/redeem, you do it directly with the smart contract through the Money on Chain app or a wallet integrating the protocol, and you are creating or destroying the token.
Other way to get Money On Chain tokens is by swapping them for tokens in Rootstock or other networks. You can check how to do it reading Swap tokens and Get MOC tokens.