hearing this makes me worried I missed the boat.. (heh.)
Don't worry, it is easy to learn. The hard part is working together, and that is made much simpler if you have a good captain and/or are playing with friends.
Generally most random crews are ok, and a new player can slot in pretty quickly. However, if you get a bad crew it is very frustrating, you can do everything right and still lose horribly. If that happens you can come here to blow off a bit of steam, then hope the match maker drops you on an excellent crew for the next game
Actually, it is surprising to me how quickly new players pick things up. It only took me a few matches to be pretty comfortable with the basics, and watching all the PS4 players stream in leads me to believe that is pretty typical.
Pet peeve #1 when playing engineer: The other engineer taking a buff hammer and removing my carefully applied crowbar armor prebuff.
The crowbar is
amazing for keeping parts alive, making it the best possible thing to use on the hull armor. I always apply crowbar armor to the hull, then apply a "prebuff" so I can refresh the armor with a single crowbar hit. This has saved the hull armor from going down in a sticky situation more times than I can count.
The problem is that some "genius" engineers take a buff hammer and destroy my work (sometimes even stripping off an active armor buff), then wander off. Meanwhile, I notice the hull taking damage, so I rush over to refresh its protective coating only to discover it is gone. Where before I could use a single crowbar hit to give myself a nice bit of breathing room to put out the fire or repair the damage, now I'm stuck scrambling to fix the problem before the ship blows up.
Luckily the kind of engineer who does this is pretty rare. They tend to be level 3-7, just far enough in to have discovered the buff hammer, but not far enough in to have figured out what the crowbar does. So far asking them to please not buff the hull is enough.
shudder That one captain who yelled at me for "not doing anything" when I was the only thing keeping his ship alive was worse (I was constantly refreshing the hull armor crowbar buff, since he was flying straight into the enemy guns with no regard for damage. As soon as it was buffed the previous layer was basically gone).
Anyway, don't let my horror stories discourage you, for every oblivious player there are many, many smart/helpful/nice players.