You could try this one from Princeton:

https://online.princeton.edu/course/bitcoin-and-cryptocurrency-technologies

I believe it's free. And should be high quality.

It may be free, and it may be really good, but high quality? I never believe in free stuff, because if it's really good, they will not give it away for free.

Any thing related to blockchain and cryptocurrency in general is in developing stage so must of things you will need are self taught lessons from pieces of knowledge on the internet. But you try youtube and see a lot videos which might lead you to bootcamps and converences to meetups on blockchain.

I really want to open a course on cryptocurrency courses in my area, I want to form a good young trader trader. Cryptocurrency is one of the areas that need to be pursued at this time, because now the industrial sector is controlled by the digital world.

I suggest to study directly to information technology experts, or you can buy his book. all this is just a matter of solving algorithms, and all the formulas are in the lesson of information technology.

One of my best technology. I have a blockchain wallet. Its a trusted wallet. 

bitcoin is a best course for make blockchain and bitcoin is too secure and good for the holders and investers from last 2 years bitcoin value is increasing day by day and my all friends are too happy with that and they also want to invest and so i know bitcoin is a best source for blockchain

World Cryptocurrency have lots of opportunities to get coins. And you must continue learning about crypto. With you add to your knowledge about crypto.

Blockchain is a technology that securely transfers data based on a very complex coding system, similar to a company's accounting ledger, where cash is closely monitored. In this case Blockchain is an accounting ledger operating in the digital domain.
Blockchain owns a very special feature that is the transmission of data does not require an intermediary to confirm the information. The Blockchain system has many independent nodes that can authenticate information without requiring a "sign of trust". The information in Blockchain can not be changed and only be added with the consent of all nodes in the system. This is a high security system against the possibility of data theft. Even if part of the Blockchain system collapses, the computers and other nodes will continue to protect the information and keep the network going.
Blockchain technology can be said to be a combination of the three technologies below:
Encryption: Use public key and hash function to ensure transparency, integrity and privacy.
Peer-to-Peer Network: Each node in the network is considered a client and also a server for storing application replicas.
Game theory: All nodes involved in the system must comply with the rules of consensus (PoW, PoS ...) and motivated by economic incentives.

A blockchain is resistant to modification of the data. Distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way". For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for inter-node communication and validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without alteration of all subsequent blocks, which requires consensus of the network majority