You can lead a horse to water, but you can't make him drink. You're your own worst enemy bro. Just do it! Use nicehash miner. https://www.nicehash.com/index.jsp Its most easy thing for a total newbie like you. Just install it and run.
You sure need a wallet address to collect bitcoins. Go for this one:
They have 2 factor authentication, you want to use for your wallet as a must safe guard. Also, they run one of the largest bitcoin exchanges for real money to bitcoin. So you can trade your Bitcoin over far fewer fees. Right now there is a massive fee just moving bitcoin around wallet to wallet. You just want your wallet to be same address you use to change over to usd when the time comes to use the cash to buy a new GPU.
Coinbase has 2 factor authentication you want to use for your wallet for sure. Also they run one of largest enchanges for real money to bitcoin. So you can trade your bitcoin over to dollars with little fees. Right now there is a massive fee to network when moving bitcoin wallet to wallet. If the wallet already belongs to major bit coin enchange you wont have to first move to enchange to get your money.