Definitely, Those things are very useful for a beginner like me. I will go through all the content and learn it by practicing. Also, I don't want to close this thread though you suggestions cover many techniques. Let's wait for other legends to suggest.
In addition to what Stefan and Sunny said, I would recommend to be an active user of the Qlik Community.
Community is an ocean, you will get most of the things.
You can also take a help of the help site, which has a good explanation of the syntax.
having fun in learning and enjoying what you're doing is a great starting_point. Welcome to the Community!
I hope to be more active again here going forward - in the job I'm currently doing, QlikView is off the official agenda, but I got a new job from next month where QlikView has a very different place in the scheme of things, so I hope I can be here more often again.
Congratulations! A passion for learning the tricks and tweaks of the tool will get you far.