Like they said, there's nothing you can use to earn $2 daily using an old computer or android devices.

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But since you're a newbie (Yes Jrs are newbies too).
You might be talking about those micro-earnings like faucet sites that rewards Satoshi.

Try coinpot.co, after registration, go to bitcoins (menu) and select "Mine Bitcoin" to earn some satoshi depending on your hashrate.
Take note that this is not a "Real" mining operation but a kind of a gimmick (CoinHive-based), but the site rewards you satoshis instead of XMR.
You can claim to their faucets too, use the developer's referral links (from their ANN Thread) if you want to "thank" them at least.

Just don't expect higher than $1 a day using that old computer alone (You'll pay more electric bill than the reward  ).