IOTX is the native cryptocurrency of the IoTeX blockchain platform, which aims to create a decentralized network for Internet of Things (IoT) devices. If you are interested in buying IOTX tokens, here is a step-by-step guide on how to do so:

1. Choose a cryptocurrency exchange: The first step is to choose a reputable cryptocurrency exchange that supports IOTX trading. Some popular exchanges where you can buy IOTX tokens include Binance, KuCoin, and Gate.io.

2. Create an account: Sign up for an account on the chosen cryptocurrency exchange by providing your email address, creating a password, and completing the necessary verification steps.

3. Deposit funds: Deposit funds into your exchange account using a supported payment method, such as a bank transfer or credit card. Make sure to deposit enough funds to cover the amount of IOTX tokens you wish to purchase.

4. Buy IOTX tokens: Once your funds have been deposited, navigate to the trading section of the exchange and search for the IOTX trading pair (such as IOTX/USDT or IOTX/BTC). Enter the amount of IOTX tokens you want to buy and place a buy order at the current market price.

5. Withdraw your IOTX tokens: After your purchase is complete, you can withdraw your IOTX tokens to a secure cryptocurrency wallet for safekeeping. Make sure to use a wallet that supports IOTX tokens, such as a hardware wallet or a software wallet like MetaMask.

6. Monitor the market: Keep an eye on the price of IOTX tokens and consider setting up price alerts to stay informed about any price movements. You can also consider using trading tools and strategies to optimize your investment in IOTX.

Overall, buying IOTX tokens is a straightforward process that involves choosing a reputable exchange, creating an account, depositing funds, buying IOTX tokens, and withdrawing them to a secure wallet. Remember to do your own research and only invest what you can afford to lose in the volatile cryptocurrency market.