The pregens in the core book are not legal, but ZeConster did a nice writeup on how to fix them
http://forums.shadowruntabletop.com/index.php?topic=11847.msg218332#msg218332I might also recommend the digital box sets as well, as they come with 5 pregenerated characters. That are all built legal, and then given a purposeful boost in a small fashion
As for first hand info. I run an online game for 5 players, and only one of them (my tabletop player that joined) has any prior experience with Shadowrun. The other 4 were all D&D only players before this, so they tend to approach the game from a D&D mentality. Kill the badguys, loot the bodies. So, if you can do anything to discourage that mentality quickly, it might help.
One of the guys made a Technomancer (I still think it was because the name sounded cool, and not because he wanted to be a hacker). He has since Submerged, gotten Mind over Machine Echo, and is trying to be a technorigger. But this is mainly about the hacking.
The hacking is cleaned up. If you Decker/TM stays in AR mode, then he should be able to hack stuff all the time. Enemy gear, files, hosts, etc. He can be slaving the group's important gear to his Deck, staying on Matrix overwatch, keeping an eye on marks and the activity of enemy Deckers, and trying to brick opponents stuff. The system does a good job of encouraging your Deckers and TMs to stay with the grou.. well, Deckers moreso, since TMs can't be the Master of a PAN, so they can't protect their teammate's stuff as easily.
They get better initiatives in VR, so can do multiple things, and still do it side by side with the rest of the party, but in VR, they might also want to stay safe inside the car, van, house, whatever while the group goes on the run. This has it's risks, but it has the payoff of being easy and safe too, so it's what the TM player in my game always wants to do. He'd rather stay locked away from danger, and jump into his drone to accompany the group, than stay with the group. So, enemies will start getting wiser and harassing his meat body while it's conveniently away from any support, and maybe then he will see the merit of remaining with the group.
I would talk more about hacking on the run, but this player is new to Shadowrun, and he still doesn't think of things he should be hacking. He doesn't Snoop on enemy communications, drop AROs on priority targets... They went on an infiltration run, and he never even hacked into the cameras to get a look at what was going on in the building. Instead, he spends most of his time randomly trying to home in on silently running devices, instead of focusing on the ones he knows about.
I am trying to teach him through subtle hints, and a few times when he couldn't make it, I've NPCd him doing some of these things, so maybe the group will start asking him to do some of these things more often.