Question: Now that we have this network, I'm sure there'll be newbies coming in asking questions like,

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> How do I get started with Mozilla/KDE/etc?
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or

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> How do I start contributing to project xyz?
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I guess these questions would be very organisation specific, and would spam the network. Would these questions be relevant?

Answer: 
Most of these sorts of questions should (and, I think, will) be closed as **too broad**. There are a million different ways to "get started" with something and Stack Exchange is not the platform for that type of discussion.
Both of these questions *feel* like lack of research type questions. Presumably projects that want contributions from others will provide such answers on their web page/CONTRIBUTING/README/etc. 

I do not think we should be the switchboard for projects. If a user wants to contribute, they should be visiting the project and looking at their guidelines not asking us to do it for them.