Personally,
Without knowledge, this is a bit of a minefield (but what area of antiques and art isn't?). When starting, the problem is knowing my taste, what I like, what to look for, and what area of interest. Will I buy to learn from the item and then sell it to move forward or to buy and keep it?
I probably made all the mistakes from the start and continue to learn.
Grey has many books https://www.Japanese.../item-category/book/
-B