1. focus initially on mastering the full range of radiological presentations of the most common neuroradiology problems - specifically infarcts, bleeds, tumours
2. this will allow you to recognise unusual presentations of common problems, and also diagnostic categories outside these common categories, which you should next focus your attention on
specifically, direct your efforts to now master the full range of radiological presentations of less common neurological problems - specifically white matter disease including demyelination, and congenital and developmental anomalies
3. you can use a similar approach with the head and neck; and spine
for example, for the head and neck, you can focus on trauma, inflammatory sinus disease and common tumours first; and for the spine, you can focus on degenerative disease, trauma, infection and common tumours first
the "Special Collections" of the American Journal of Neuroradiology (AJNR) mirror this strategy
make use of textbooks, review articles, and online resources, e.g.
Conventional and Advanced MRI Features of Pediatric Intracranial Tumors: Posterior Fossa and Suprasellar Tumors (AJR, 2013)