Could you please elaborate on the steps involved in purchasing Luna Classic through the Trust Wallet application? As a cryptocurrency enthusiast, I'm interested in understanding the process from start to finish. Specifically, I'd like to know how to set up my Trust Wallet, if there are any prerequisites I need to meet, and the detailed steps to follow in order to successfully acquire Luna Classic tokens. Additionally, any security measures or best practices I should be aware of during the transaction would be greatly appreciated.