I think all the RSS feeds are very useful and will save a lot of time, since they are all being handed to you on a plate and give you the up-to-date news. You might have missed them if you had to check each site.
I hadn't realised the potential of Google Reader -first time I've tried it. I found I spent quite a while with it - particularly the optional task. I didn't find the different tabs easy to sort out. ( Lost "reader settings" and "folders and tabs" - will ask those more informed amongst us.) I produced something - but if I tried it again it would still take a while. Generally, I thought it was very useful for sharing information. I found the NHS site easy to use and the browsers were OK.