JUST CAN'T GET ENOUGH
These are a few of my favorite all-purpose research hot spots:
This man is the original travel blogger. (I actually love his books, also.) The site is super easy to navigate and should be your #1 extra resource when planning your trips.
Wondering how much a week in Budapest would cost? Or maybe 2 days in Tel Aviv? How about 2 weeks in Tahiti? This site should be your first stop. Easily see how much you should ballpark for a trip, or use it to help choose between 2 destinations based on your budget!
Facebook
Yup, I said it. It sounds silly, but there are HUNDREDS OF THOUSANDS of people with experiences that they're sharing.
Laugh all you want, but some of my favorite groups are "Girls LOVE Travel" (female only, sorry boys!), and Travel Community (this is associated with Scott's Cheap Flights)
There's a reason that this is super well know-- it's the best. Something to keep in mind though: Some reviews can be over a decade old, so those reviews should be taken with a grain of salt.