The University of Reading provides detailed but simple to follow guidance on academic writing including grammar, writing in an academic style and effective proof reading.
The University of Sussex has an academic skills webpage which includes helpful guidance on planning, drafting and editing. The website also has example essays and guidance on reflective writing and critical essay writing.
Oxford Brookes University has guidance on a range of study skills, including how to write and structure different aspects of a piece of academic writing, for example, an abstract.
An example academic book review can be found here: