Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

现在就是开始你职业生涯的时候。

循环经济不是一种选择——对于希望在未来十年蓬勃发展的行业来说，这是唯一的前进方向。