Number 4: Pay it forward
This part is hugely important, especially since Netrunner is still very much a game that needs to grow its base.
When I first started, I showed up to my LFGS on LCG night with my cards and a basic understanding of the rules. I think I got three games in that night, over 3 hours, and I left early because no one would play me. Of the three games I did get in, every single one of them was like pulling teeth. My opponents would sigh and roll their eyes because I didn't have every card memorized or would ask questions about things I didn't understand, then would make an excuse to go play one of the other locals. I almost quit Netrunner that night. I certainly haven't gone back to that group since then.
Fortunately, I found another group in my city that is open and friendly to help me learn the game. But I think it's worth pointing out that Netrunner is a complicated game, especially for beginners. If you run into someone new, try not to be "that guy".