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I want to study biology. Which course to do first?

I'm 29 and working towards being a veterinary nurse and would like to do biology. For work and just general curiosity. I didn't do any sciences, math etc at school. Which courses should I do leadin...

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Where do I start with math and biology?

For improving math should i work through the grades starting at 1? And with biology what do I start with? Should I go Into the biology library or do middle school biology? I left school with noth...

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2. General Khan Academy Questions