Ahh the project just changed since I don't know Zig :D
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Do Ziglings
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Write a command-line tool such as Echo, Cat, etc.
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Text processing
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Write a few simple games
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Write a web server
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Learn about data structures and algorithms
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Write a calculator with advanced maths
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Write a game with Graphics (libfribidi)
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Write system code (OS)
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Network-based apps such as chat apps, file sharing tools, web scraping etc
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Write a compiler or interpreter for a lang (prolly a 100% native Lua)
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Contribute to a project written in Zig
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Make a personal project (Zigote)
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Engage in the Zig forums