A selection of resources
Meningitis
NICE is fabulous and clear on this condition.
The british infection association has a poster style guide for the immunocompetent patient and a more extensive text guide.
Some of the finest free to access resources out there
Emcrit
The internet book of critical care provides detailed breakdown of unwell patients with meningitis.
A large review of presenting feature of meningitis
Highlights the unreliability of the "classic" clinical signs.