For getting help finding websites Pearltrees are really the help you need, to start your research.
Pearltrees use to have a mindmapping interface, and now it look more like pinterest. You can stack webpages in a hierarchy of collections. You can even add notes.
Last 10 years I used to use Delicious and before that yahoo bookmarks, now I have found a winner in Pearltrees that makes bookmarking more social and interesting.