If I want to systematically expand my knowledge of roots, should I use Baza Radikaro Oficiala, or is there any better source?
I know that it is the official list of roots, but I'm wondering about the practical usefulness. If there are several ways of expressing the same thing, is the way that uses the official roots the most popular one? Will my speech and writing be easier to understand if I only stick to the official roots?
There are over 5000 official roots, should one master all of them before moving to other, unofficial roots? Or is there any other list that is more suitable for practical learning?