How Do You Learn?

You can look up different books online or you could consult someone online on the forums but reading a book will help more. 

“How Do You Learn?”

Why the Audiogon forums of course!

Where ever you go you will run into bias. Since speakers are the most important item read The Loudspeaker Handbook (Second Edition) by John Eargle. 

Rule #1 Never listen to anyone who is trying to sell you something. This includes reviewers who are agents of the companies that advertise in their rag. Reviewers are generally not technical people, they are English majors. John Atkinson of Stereophile is an exception. 
Rule #2 Never listen to anyone who owns the equipment you are interested in. It will always be "great." 
Rule #3 Books are best. 

As for Audiogon the advice here is all over the map extending from excellent to mythological. 

Case in point.

The best thing to do for me was listening experiments with simple materials...

Articles and books gives ideas not the low cost solutions at all...

 They sell something with the new idea....then keep the idea and dont buy any stuff...

experiment and listen....

It was my gratifying solution....