Nice advice you have given here for the newbies here. Number 3 is important. You will people in either category- someone will like buying upvotes while others won't. I am not against it but be careful while bidding. Recently the profits from bid bot are very very less.
Hope that newbie will be helpful from your post :)
Info: Why do I prefer busy.org over steemit?
Tips: The Secrets to Success on Steemit
Tips for newbies: How to give a fractional upvote when your SP is below 500?
Very true, the use of these bots has risen really fast. But if you are really cautious at the right time you can make Alot of gain