How to Use CoinMarketCap.com

CoinMarketCap.com is the go to site for most crypto enthusiasts.  Coin Market Cap maintains a comprehensive list of all the cryptos on the market.  But if you are new to trading, or cryptos, the terminology can be a bit daunting.

CoinMarketCap.com on 30th January 2018.

Let's look at each column and decipher what information each column is conveying:

#
This is the Rank of the coin.  Rank is determined by the Market Cap.  The higher the market cap, the higher the rank.  See Market Cap below.

Name
Obviously, this is the name the coin goes by, and is accompanied by its logo.
The name is also a link to a page with more details, links, and graphs for the coin (see below).

Bitcoin detail page on Coin Market Cap.

Market Cap
Market Cap is short for Market Capitalisation.  Market Capitalisation is a way to determine the size of a currency.  It is calculated by multiplying the Price by the Circulating Supply. (See Circulating Supply below)
Market Cap = Price x Circulating Supply.

For example, above BitCoin's Market Cap is
    Price:                           $11,320.70
    Circulating Supply:    x 16,833,825
    Market Cap:              = $190,570,682,677.50 (Rounded up to $190,570,682,678.00)

Price
Price is a volume weighted average of prices reported at each market.  This means that they take an average of the price of a coin across the markets (exchanges), but markets that have a higher volume of trading (in that coin) is considered to be a closer reflection of the value, so their value is given more weight.
The Price is also a link to a list of the markets that list the coin.

Bitcoin Markets on Coin Market Cap.

Volume(24h)
Volume is the trading volume in the previous 24 hour period.  This is calculated by adding all the buys and sells together that were filled in the previous 24 hour period.
The Volume(24h) is also a link to a list of the markets that list the coin (see above).

Circulating Supply
Circulating Supply is an approximate number of coins that are in the general public's hands.  By contrast the Total Supply is the total coins in existence currently and Max Supply is the approximate number of coins that will ever exist in the lifetime of the crypto.
The Circulating Supply is also a link to the block explorer for that coin.  

Bitcoin Blockchain Explorer

Change (24h)
This is the percentage the price has changed in the previous 24 hours.

Price Graph (7d)
This is a graph of the previous 7 days price changes.
If you click the graph it links to the Coin Market Cap Charts for that coin.

Bitcoin Charts on Coin Market Cap.

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Now, let's look at the top of Coin Market Cap's website.  They have a very handy top bar, with additional market wide information.

Starting from left to right:

Cryptocurrencies
This is the number of cryptocurrencies currently on the market.
The link takes you to a list of all the cryptos, similar to the front page, but with slightly different details.

Currency List on Coin Market Cap.

Markets
This is the number of market pairs available (BTC/ETH, BTC/USD, ETH/USD etc) across all markets.
The link takes you to a list of all the market pairings for each coin.

Market list on Coin Market Cap.

​Market Cap
This is the total Market Cap of all cryptocurrencies.
The link takes you the global charts for all cryptocurrencies.

Global Charts on Coin Market Cap.

​24h Vol
This is the trading volume in the previous 24 hour period of all cryptocurrencies. 
​The link also takes you the global charts for all cryptocurrencies (see above). 

BTC Dominance
This is the percentage of the total market cap bitcoin has.
​The link takes you to the Bitcoin Dominance Chart.

Bitcoin Dominance Chart on Coin Market Cap.

English/USD
This tab allows you to change the language and currency for the site.
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There is so much more on Coin Market Cap.  Now that you have a basic understanding, explore the rest of the site.
For more information about Coin Market Cap see the CoinMarketCap FAQ.