YouTube has a huge community of people with exactly that set of interests, so that’s one obvious place. Psychotraveller has good series on travel basics, for example. http://bit.ly/bc-travel. There are websites like Her Packing List that focus on how and what to pack. https://herpackinglist.com. Guidebooks like Rick Steves or Lonely Planet are an old-school way to check on destinations before you go, and they have digital versions…and they’re a little more consistent in tone and quality than TripAdvisor. Try a few of those and let me know if you have more questions..