You can find an introductory first level module for 4th edition over here. At first quick read through it seems usable. It is missing maps but the encounters are all what I call open air encounters where the actual ‘map’ isn’t critical so don’t necessary take that against it.
Gotta go put my kids to bed so I have nothing more to say about this to be honest. As always if nothing else give it a look, as with anything, you can learn from it in either direction.
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