Perhaps signature campaigns are a good way, they are not difficult for beginners, and also may help the experienced users.
This is very true signature campaigns are a very nice way to make some beginning money and grow btc. Also services theres alot of services needed which you can do and earn alot of bitcoin from that. goodluck with growing btc.
I would agree that signaure campaign is one of the steady way of getting bitcoin. And continously working for it will enable you to grow your bitcoin each day. another thing is thru trading but it has risk. But if you manage to master the skill, your bitcoin will grow exponentially. Participating in legit ICO also help.