Yes..you are 100% right -- it is easier said than done. Otherwise, the unemployment problem in SGP would be easily solved -- everyone becomes online trader/investor. What I m saying is that it is do-able...if one has the keen interest and perseverance.
On your other point - Even if you are willing to pay, you have to be able to find the RIGHT someone willing to teach the RIGHT stuff. And even if you could find that "sifu", it is going to cost a bomb unless you develop some blood/symbiotic relationship with him for him to share trade secrets. (I assume when you say "RIGHT" stuff, you are referring to coming up plans/strategies that will give u the edge to make $)
But realistically for most of us, so long as we have some basic financial knowledge, and given the limited resource (i.e. $) a practical solution is D-I-Y