I’m a big fan of all of these. Clayden is very gentle (or maybe that’s just Org being easy...). But Atkins gets hard quite fast—-the chat from first years is that beginners will find it a bit tough. I’d generally recommend the cut down Atkins to start (Elements of...) or if you prefer pop Sci The Second Law was great as an UG trying to wrap my head around this. Creation Revisited also rocks.