今天在Amazon Kindle Store网站逛，心血来潮搜索了cryptocurrency free book。
哇，发现了很多本免费的区块链,加密币课题的电子书，0元。😲
不懂有没有时效性，有兴趣的朋友别错过了。🙂
Today while I am browsing Amazon Kindle Store, it suddenly comes to my mind to search using "cryptocurrency free book".
Wow, I had discovered lots of free Kindle ebooks on topic of cryptocurrency, blockchain. 😲
Not sure whether this deal has a time limit. Grab it while it is still available. 🙂
Amazon KIndle Store search result - URL
我"买"的0元区块链,加密币课题的电子书:
Blockchain, cryptocurrency books that I "bought" with 0 dollar :
Screen captures from my Amazon Kindle apps
