Nice video Sumit sir ! And I am in complete support of your commenting idea.. because even I have managed to increase my reputation from 25 to 34 in 3-4 days just by commenting on right people's post... but I still don't think that one can earn sufficient STEEP POWER with it.. there are many people on steemit whose reputation is over 60 but yet they have very less steem power and hence there per post earnings are small.
Like you have recently bought around 700 SP, all these people who have a large steem power and earning well have actually bought SP ... and now are paying bots for upvotes and that causes more people to like their post..
Plus if you have more SP you can definitely earn well in CURATION REWARDS section...

I am continuing with what you said.. but still let us know what you think.. is buying SP only the best option and that too how much for the initial stage..
Thank you