I don't often plug stuff, but Intersurgical has just made a good CD ‘Oxygen therapy devices’, free from info@intersurgical.com. You could also ask for their laminated sheet ‘Oxygen is a drug and must be prescribed’ to put up in your ward.
American Association for Respiratory Care
www.aarc.org/

Association of Chartered Physiotherapists in Respiratory Care
www.acprc.org.uk/

Auscultation library                                                                   www.cvmbs.colostate.edu/clinsci/callan/breath_sounds.htm 

Blood gases
www.acid-base.com/terminology.php#SBic2

Breathe On UK
For families of ventilator-dependent children.
www.breatheon.org.uk/

Breathless leaflets for patients
www.cks.nhs.uk/palliative_cancer_care_dyspnoea/leaflets_for_patients

British Lung Foundation
www.lunguk.org/
British Thoracic Society                                                                         
End of life care
www.endoflifecareforadults.nhs.uk/

IMPRESS - Improving and Integrating Respiratory Services in the NHS
www.impressresp.com/

Intensive Care Society
www.ics.ac.uk/

Hyperventilation Syndrome
www.physiohypervent.org                                                                      
Map of Medicine (acute head injury, asthma, bronchiectasis, COPD, HF, ILD, lung cancer, OSA, pneumothorax, smoking cessation)
www.mapofmedicine.com/accessthemap/accessthemap/

Oxygen - acute (BTS Guidelines)
www.brit-thoracic.org.uk/Portals/0/Clinical%20Information/Emergency%20Oxygen/Emergency%20oxygen%20guideline/Appendix%201%20Summary%20of%20recommendations.pdf

Oxygen - chronic (for patients and professionals)
www.homeoxygen.nhs.uk/1.php                                                                                     
Primary Care Respiratory Society UK
www.pcrs-uk.org/

Smoking cessation
www.gosmokefree.co.uk/

UK Respiratory Guidelines
guidance.nice.org.uk/Topic/Respiratory

US Respiratory Guidelines
www.rcjournal.com/cpgs/


BTS = British Thoracic Society