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That actually is the success of the platform, that people without deep knowledge about digital assets and internals of blockchain-based platform can be here. Better understanding would come in time. Please take a look at Quick Start Guide and Frequently Asked Questions to get some idea about witnesses and whole lot of other details about Steem platform.

As a newbie or "minnow?" I got encouragement from your reply Gandalf. This can be quite bewildering to a newcomer but I am working hard at understanding all this stuff. Thanks!