@geeg its great to hear this series is helping you. My aim is to explain as much as I can of what I learned here on steemit, so that I can help new visitors, new steemit users, and minnows understand as much as possible faster than having to research everything by its own, and also help them make their way on the platform.

Regarding your password question, if you click on the button next to the Post button above on the top right corner, (it is your blog image), the last function says logout.

It is important you put your Master Password and Owner keys offline, so that they are safe and much more dificult to get compromised. If you start using your post key to make posts, everything that can happen if somebody takes your post key password is that they will vote or comment or post, but they can't take your funds from the account.

Any other thing or questions you may have, just let me know. Me and other steemians with the knowledge will be more than happy to help. This is the power and magic of the steemit community.

Also, I visited your post, and its very interesting what you are planning to do with wood. Upvoted here are on your post!

Regards, @gold84