Obtain a free API key from Nomics and place it on line 57 of index.php. The Nomics API provides a great service with a competitive 1 second rate limit.

$api_key = [
    'key' => 'YOUR_KEY_HERE',
];

Set the base currency used for conversion. You may use either a fiat currency or a cryptocurrency, examples include: USD, GBP, EUR or USDT, BTC. Place the value on line 61 of index.php.

$currnecy = 'USD';

Record your cryptocurrency investments in the array between lines 64-89 of index.php. Use numeric values, without quotes, since these values will be used for calculations on the page! Use the currency tickers as listed on Nomic's website.

$assets = [
    'BTC' => [
        'coins' => 0,
        'invested' => 0,
    ],
    'ETH' => [
        'coins' => 0,
        'invested' => 0,
    ], 
    'DOGE' => [
        'coins' => 0,
        'invested' => 0,
    ], 
    'ADA' => [
        'coins' => 0,
        'invested' => 0,
    ], 
    'LTC' => [
        'coins' => 0,
        'invested' => 0,
    ], 
    'XRP' => [
        'coins' => 0,
        'invested' => 0,
    ] 
];