You surely can, just choose niche, which best suites you and find out everything about it from a to z.
For complete newbie ? From 0 ? 5 years I would say, if you can earn up to $50 a day in first year - very possible and double monthly each next year.
Very true, in the least "rudest" way. I think too many people get caught up in forums while trying to accomplish goals and get stuck in a rut too quickly.