Nice 101 on Steemit OS. All good points you make, however here are a few other pointers - let's call them 'SirKnight's tips for success in Steemit for newbies'.

1. 2-1 Rule - spend 2 hours commenting and curating for every 1 hour spent drafting your own posts.
2. Authors who reward - if authors are willing to reward you for your comments - be sure to follow them and comment regularly. But always provide good quality, genuine feedback. Who knows - you might make a friend or two.
3. Community - you must find a community of people with shared interests. Loners don't get far in Steemit.
4. Do it for love and entertainment, not SP - if you are passionate in what you do, the SP will follow.
5. Get to know plenty of Dolphins - Whales probably won't want to talk to you - but Dolphin votes add up.
6. And when you have done all of the above - find your niche, do it often and do it well!

OK enough from me OS.

SK.