Plumber apprentice (Sacramento)

I would like to learn more about plumbing.
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I can and have installed shower valves ect.
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With pex and sweating copper also.
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I’ve installed over 100 shower valves and have most knowledge of plumbing but not knowing code for certain tasks like vent pipes regulations of plumbing codes… Willing to start at the apprenticeship level.
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Please contact me if interested.
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Thanks