Top 3 sites Bitcoin to Make Money

Bitcoin is a first decentralized digital currency , and transactions take place between users directly , These transactions are verified by network nodes through the use of cryptography and recorded in a public distributed ledger called a blockchain , and worldwide payment system

I will present to you the best sites for the Bitcoin mining
1- https://www.nicehash.com
NiceHash is the world’s largest crypto-mining marketplace. It is based on the concept of a sharing economy by connecting sellers and buyers of computing power from all over the world.
Sellers are provided with the easiest way of earning money through the NiceHash Miner (GUI software) that autosells user's computing power for highest possible profit on the marketplace. The dashboard provides sellers with additional value and data insights for better day-to-day mining.

2- https://www.genesis-mining.com
genesis-mining is a company that sells bitcoin mining contracts and is currently one of the largest cloud mining companies in the world.

3- https://minergate.com
Minergate : It is the first pool which provides service for merged mining. This means that while mining on our pool you can mine different coins simultaniously without decrease of hashrate for major coin

Best site to receive your profits from Bitcoin ( wallet blockchain )
https://blockchain.info

For mining you need special graphics card or maybe you need many graphics cards and high-speed Internet
Best graphic cards for mining all digital coins

A - AMD Radeon R9 295X2 (8GB) GDDR5

B - NVIDIA GeForce GTX 1060

D - AMD Radeon RX 570

You can put a bunch of graphics cards together in a motherboard , You can create your own mining machine by yourself , Can be made of aluminum and wood pieces , and Connect them together via an SLI port