To get started with Collar, you will need a cryptocurrency wallet on the Ethereum Mainnet, some pegged cryptoasset tokens that Collar supports, and some Ether (ETH) to pay for the gas fees for the transactions. Once these are ready, you can use the app at collar.org to interact with the Collar smart contracts.
This guide will cover performing all the basic functions available to you on the "Lite" page of the Collar app.