As with most professions, nothing can replace experience. Senior engineers, laborers, scientists, doctors, etc. all become seniors through years of learning, and arguably more importantly, failing.
Rookies will try “method A” until it fails, then learn “method B”, then try A and B until a C is needed. Rinse and repeat. Being self-critical and observant will help.
In the short term, “in 6 months”: Practice. Every. Single. Day. If you need to break for day, make sure you come back the next. There are thousands of educational tools out there: Online lectures, free tests, public forums, problem sets (i.e. leetcode) etc. Don’t skip the fundamentals, even if it seems boring. It will mean less memorization, and you’ll understand more complex topics easier.
If you plan and commit to it, you still won’t be a “pro”, but you’ll likely have a chance in an interview, where you might land a job. There, over years, you can hone your skills.
I think the point is that he’s blocking it from daily exposure. Obviously these are very important events, but the inundation of articles - some of which trying to capitalize on the violence - can be detrimental to the victims. Over-exposure to this horrific war causes it lose its severity.
Everyone trying to follow and stay aware of what’s happening should be picking and choosing their sources of information anyway. I wouldn’t call Lemmy best source for this or any world event.