We all have to start somewhere. If someone will mentor us and provide, advice, help and possibly face to face demonstration, with hands on experience, we are very fortunate.
This is the best way of learning.
The danger is of becoming overconfident , before sufficient experience has been gained.
O K, we all learn by slightly overstepping the limits of our knowledge, that is learning.
The important thing is to paddle before embarking on a cross channel swim.
None of us know all about everything.
The more experienced, in any sphere, should make the incomers welcome and try to pass on their knowledge and skills to them..
Howard