As @zEUs_japanese already mentioned, you can always look around in the absolute beginner book club stuff. ^^
When voting on which book to read next, they often post snippets in order for people to gauge if it’s easy or hard for them. That can give you an idea on whether you may want to buy one of those books, or if you want to join a book club.
Even if you look through the thread of a book club that finished, there will be people asking and answering grammar questions, and sometimes there are vocab lists put together by the reading group. That can speed up the checking of unknown words.
Someone recently posted about a site called JLPT stories. It’s short audio clips read by natives, but it also has the full text available. You can always read (and listen) to that, since it’s aimed at students of specific JLPT levels.