Please capitalize where necessary: disconnect from the wireless network on the specified interface.
A: Disconnect from the wireless network on the specified interface.

Please capitalize where necessary: spotlights directly above the participants create a modelling top light.
A: Spotlights directly above the participants create a modelling top light.

Please capitalize where necessary: his dark materials (the trilogy) - philip pullman - (introduced to me by my friend sarah cross and devoured by us all).
A: His Dark Materials (the trilogy) - Philip Pullman - (Introduced to me by my friend Sarah Cross and devoured by us all).

Please capitalize where necessary: aventurine and bloodstone bracelet with extendable chain - bjbead.com
A:
aventurine and bloodstone bracelet with extendable chain - Bjbead.com