I can definitely recommend &quot;Molecular Biology of the Cell&quot;, which is a undergrad-level textbook about cells.  The latest edition is always very expensive, but you can get older versions cheaply.  Link: <a href="https:&#x2F;&#x2F;www.amazon.co.uk&#x2F;gp&#x2F;product&#x2F;0815341067" rel="nofollow">https:&#x2F;&#x2F;www.amazon.co.uk&#x2F;gp&#x2F;product&#x2F;0815341067</a>