To learn from forums we have to explore them very well and need to invest a long time.
Everyone will not make a good post but they are some people who make valuable posts.
You can get experience sharing experiences in forums rather than speaking theoretically.
If you find someone's post useful then go through his profile to find out about other posts
that might also be useful to you. Ask questions if necessary and you will get different
opinions and some of them will help you a lot.