Popular Exchanges:

Margin Exchanges:
ByBit -> https://www.bybit.com/a/CCO ; 20% discount on fees.
Binance Futures -> https://www.binance.com/en/futures/ref/cryptocartel ; By This reff You get – 10% discount on fees.
BitMex -> https://www.bitmex.com/register/WBhKrQ ; You will get 10% discount on fees for 6 months.
OKEx -> https://www.okex.com/join/1/2334415 ; You will get 20% discount on fees

Altcoin Exchanges:
Binance -> https://www.binance.com/?ref=15920809/
Bittrex -> https://bittrex.com/Account/Register?referralCode=AAV-5AJ-LTE
Kucoin -> https://www.kucoin.com/
Poloniex -> https://www.poloniex.com/
Huobi -> https://www.huobi.com/
IDEX -> https://idex.market/ ; Decentralized Ethereum Asset Exchange

Other Popular Exchanges:
Coinbase -> https://www.coinbase.com/ ; Can deposit and withdraw to credit card. Wallet function.
Kraken -> https://www.kraken.com/ ; Can deposit and withdraw to credit card.
Bitstamp -> https://www.bitstamp.com/ ; Can deposit and withdraw to credit card.
Bitify -> https://tinyurl.com/y2twvt8e ; Bitify is the worldโ€™s largest Bitcoin Marketplace and Auction site. Offering a platform for users to exchange items for Bitcoin in a P2P marketplace.
LocalBitcoins -> https://www.localbitcoins.com/ ; people from different countries can exchange their local currency to bitcoins or vice versa. Change Bitcoin to currency through Paypal, neteller, SEPA etc.

Crypto Market overview / information etc.

Crypto Compare -> https://www.cryptocompare.com/
CoinMarketCap -> https://www.coinmarketcap.com/
LiveCoinWatch -> https://www.livecoinwatch.com/
World Coin Index -> https://www.worldcoinindex.com/

Wallets:

Exodus -> https://www.exodus.io/
Jaxx -> https://www.jaxx.io/
Blockchain -> https://www.blockchain.com/
BitPay -> https://www.bitpay.com/ ; BTC, BCH wallets only. Possible to order VISA card and spend crypto.
MyEtherWallet -> https://www.myetherwallet.com/ ; Wallet for ETH and ERC tokens.