İ don't know the websites that you can learn intensely but, the articles that i added here may help you to get knowledge about what you would like to know.

https://cryptopotato.com/bitcoin-crypto-technical-analysis-beginners/
https://masterthecrypto.com/guide-cryptocurrency-trading-crypto-technical-analysis/
https://www.forexlive.com/technical-analysis/!/forex-education-so-you-want-to-trade-bitcoin-20170808