Well, if there's time for legwork, one simple option is to ask them what they're doing in that time to at least get them thinking about it.
Sounds good, I'll add that in to the next run.
If they truly do not understand the concept of legwork and that Shadowrun has quite a bit more going on in the hiring and research stages than D&D usually does, why not just"lift the screen" at the end of the run and tell them what all they could have done/earned had they done a bit more in the legwork/negotiation phases. Just do it for one run and see how that goes.
Start by showing them the info they could have obtained through Datasearch/Contacts on all the various individuals, perhaps?
While I haven't committed the "Ashes" to memory,
largely the legwork just gives you the story, none of it was necessary to complete any of the objectives, minus the fire itself, which I helped with.. Lifting the screen in this case wouldn't do much towards that, although I have lifted the screen to show them the combat they had wasn't supposed to be a steamrolled battle.
It can be a good prompt to have a contact call them with info, especially in the first few sessions. Once they get used A) to thinking of information as valuable and b) thinking of contacts as sources of information they'll be more likely to go seek that info later.
Might be able to do this... perhaps the fixer chimes back in saying something about their ID/Story didn't pan out how they said so be careful... of course that just might make them paranoid; it'll be a fine line.
Since they're new, I think it's entirely appropriate to specifically ask them from time to time, "So, would you like to check with any of your contacts to see what they might know about this? How about Matrix searches? Anyone want to ask the locals on the scene anything?" Hopefully they'll see the usefulness of doing the legwork and start to do it without prompting, but for now, that's how I'd approach it.
Locals on the scene is what would be the habit for them right now. That's fine in some cases, but probably not a lot of the time. For "Ashes" they
Were looking for suspicious people that may have set off the explosion after it had happened, and once again while they were fighting the fire. I don't think they see their contacts, or sometimes even their knowledge skills, as extensions of their characters abilities.