RSS Feeds

I am undertaking the course from NSW Public Libraries Learning 2.0. It is SO good. Previously I have been a light user of the internet and this course is opening new 'doors' for me. Part of this exercise is to comment about RSS feeds. It sounds good but does it work? I guess time will tell as I start to get feeds from my chosen sites. I selected some library feeds as I am new to the job and every bit helps plus feeds from my sites (eg this one). Does anyone have some useful feeds for a newbie?