well, I got my first 100 subscribers within 3 to 4 days as I used a paid service of neptuneviews.com, at first I was very confused whether I should buy this type of service or not but I came to know that there are 2 or 3 types of services that are available I the market and it's up to you to find the best one, a friend of mine told me that many influencers are using this site for there marketing purpose and yes she was right, my experience with this company is very good till now as I already crossed 1k subscribers, I will say without a kick start it is very very difficult o make your place o youtube these days