what is Cryptocurrency and how it relates with Blockchain technology part 1

i am beginning a course about Bitcoin and other Crypto currencies, this is my first video
and in this video i am gonna tell you 5 topics
1 what is Bitcoin
2 how do Cryptocurrencies works
3 how are Cryptocurrencies value determined
4 what is Cryptocurrencies used for
5 why Cryptocurrencies

so please watch and subscribe my channel for other information