You will need to own cryptocurrency in order to buy Particles, and that crypto needs to be present in your Metamask wallet.
First of all, you will need to purchase some crypto –Please purchase either Ethereum (ETH) or Avalanche (AVAX).
Below are some of the recommended and trusted crypto brokerages to buy crypto, though access to these may depend on where you live.
Create an account with your crypto brokerage, and deposit funds into your account. Most brokerages allow you to directly purchase crypto using either a credit card or wire transfer. For more information and step by step guides on how to do so, please visit your brokerage of choice’s FAQ pages.
Next, you will need to Withdraw your crypto into your Metamask wallet.