The following are the basic, topical things and sites you should check out if you want to do your own thorough research on various crypto assets.
1. Google (obviously)
2. Bitcointalk Forums - These forums are ridiculously clutch because posts generally don't ever get deleted. There is a LOT of information that you can glean from those forums because of that. It's interesting to see how certain events unfolded at a certain point in time and monitor who was on what side of things.
3. Backdated Google Searches - This is the simple process of doing a query on search terms during a specific date. For example, if you wanted to research "Bitfinex", Google would be nearly useless for you if you just threw it in the search engine. That's because everything that pops up now will be about the IEO, the OAG stuff, or Crypto Capital Co. You already know about that though, so that doesn't help. But that's where 'backdating' Google searches come in handy. If you set the range to 'January 1st, 2013' to 'December 31st, 2013', you will find information, links, articles, etc., about Bitfinex that you would never find now (just an example).
4. Save every piece of information you find - Found out someone is the owner of something while you're researching? Save that information somewhere (along with the link). Found a wallet address belongs to someone? Copy it and put it somewhere and label it for yourself - make sure to include the link where you found it at too. Basically, just make sure that you save everything and I mean everything. Sometimes you will make connections later that you were unable to make at first, and you're going to want this information handy in order to verify.
5. Learn how blockchain explorers work - This is critical. Perhaps more important than anything else. Knowing how to maneuver via blockchain explorer will help you to find out a significant amount of information as well. Keep this handy.
6. Hunt Exchange Wallets - Keeping in line with #5, make sure you aggregate as many exchange wallet addresses as you can - for as many protocols as you can. If you lose your funds or someone else does (that you're helping) or you just want to investigate a specific incident/topic, this could prove invaluable to you in the future. Most block explorers have a solid # marked, but they'll always be deficient.
7. Learn VCs - Again, these are critical. You'd be surprised what relationships you will uncover by looking at certain VC investments.
8. Know Company Ownership - If you're researching in this space, you'll find a LOT of answers to questions by figuring out who founded the project and who has invested in it. This may also help save you from putting your money in a bad spot.
9. Join Communities - Sometimes the best source of information comes from the community itself. Most crypto asset communities are found on Telegram and are a surprisingly powerful source of knowledge that is usually never on Google.
10. Reddit - This one is crucial. Reddit will serve you well in the long-term. Make sure to search high and low.
A word of caution, it's imperative that you never listen to the advice of a random avatar or stranger on Twitter or Telegram shilling a coin or pumping an idea without DYOR (Doing Your Own Research) first.