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by hood_syntax 2801 days ago
Listed in no particular order:

* Learning tools (they get in the way of solving the problem at the beginning imo)

* Incomplete/inaccurate documentation

* Not knowing what things are possible (both in code a la standard libraries or language features and working with tools like debuggers)

* Not knowing simple best practices until you're bit by something and find them out through a slow, painful discovery process