There are some good videos

來源: 越王劍 於 2025-08-31 20:03:27 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (258 bytes)

Such as

https://youtu.be/mkqyaBYSgiY?si=hrZ58_VgltEvUhM5

Or you buy some subscriptions from your broker that has it. However, it is just the first step.
 

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• 謝謝！ -Lemmon- ♂ 給 Lemmon 發送悄悄話 (0 bytes) () 08/31/2025 postreply 20:06:05

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