I'm sure I've mentioned it or just Danielewski in general. I'm a big fan of his and have read all of his work. But House of Leaves is definitely his best. I should probably reread it again to be honest.
I'm happy to talk about it and you can find a bunch of resources online that really go through it word by word and do deep analysis of it. I didn't get into that until after I read it, but it's nice to know that's there as a resource.
I highly recommend it and can definitely talk to you about it to the best of my memory. I genuinely do think it's a great novel. The fun, weird, exciting layout adds a lot but it's not the only draw - it enhances an already compelling narrative (something I can talk about with his later books too as I don't feel that all of them execute what HoL does so well, despite his best efforts).
You'll know if it's something you want to finish pretty quickly and if it is, I don't think you'll get frustrated. My recommendation is to read through the main body of text and then read the footnotes and follow them as they go whenever they pop up (this sentence makes more sense once you start reading it). Because of this, you'll need a few bookmarks and to mentally keep track of which bookmark you're starting from next time you start reading. I think at the worst, I had 3 different bookmarks in my copy at one time, plus an index card I "translated" one chapter onto for later reading (it makes sense in the book). I didn't have much of an issue, but I also read it during a pretty relaxed summer where I could dedicated like 2 hours to just reading it if I wanted to (and I frequently did, which should give you a sense of how aresting it is). Beyond that, I'd say do outside reading after. It's rich enough by itself that you'll enjoy it and then all of people's commentaries are a fun addition.
The biggest frustration point for me was reading the book consistently for like a month and seeing one bookmark only like 150 pages in, which was demoralizing until I remembered all of the footnotes, etc. I had read, which was easily another 75 - 100 pages or so.