1. What is the procedure for purchasing and selling Bitcoin, and are there any crucial elements to take into account before beginning?
You need to have the wallet first. When you have the wallet, you can buy BTC on CEX or DEX, then you send the BTC to your wallet.
To buy BTC, you can use fiats if you have CEX account. You need deposit fiats to your CEX wallets, then you can buy BTC on the spot market with fiat pairs. But if you want to buy BTC on DEX, it will be easier if you buy with USDT.
2. I'd appreciate an explanation of how Bitcoin mining functions and how it maintains the security and reliability of the Bitcoin network.
To know the basic information about mining, kindly read this first
https://www.investopedia.com/terms/b/bitcoin-mining.asp3. Why is using Bitcoin better than using conventional currencies?
Bitcoin offers the potential of higher profits. Its volatility enables Bitcoin to rise significantly although it also means Bitcoin price possibly freefalls as well. To deal with the BTC price fluctuation, you need to learn the price history and the bearish-bullrun period. Also, make sure you know well what factors that determine the price fluctation.