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The current zoom in shortcut on mac is Cmd-1. You can change it to Cmd-+ in the Preferences → Keyboard → View → Zoom In
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You can always select the audio from right to left, but yes I agree that could be handy and I find myself wishing for that too sometimes
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For removing pops check out Steve’s popmute plugin: https://forum.audacityteam.org/t/new-plug-in-effect-popmute/17499/1
You might also be looking for dynamic compression. There’s a built-in compressor in Audacity (Effects menu → Compressor). Chris’ compressor is also quite popular and you can download it as a plug-in for Audacity: http://pdf23ds.net/software/dynamic-compressor/