You're more likely to find real-time help in my Discord server. Or at a more active community, of course.
Anyway, I can get you stones and a ladder. It doesn't break, so no need for the recipe itself - Tom Nook sends it to your NookPhone early on in the game.
Stones can be collected by bashing a shovel or axe against each rock once per day in quick succession - dig holes behind your character to avoid being pushed backwards. Going on mystery island tours allows you to bash more rocks, but for the most part they aren't really worth it.
If you're just starting out, note that multiplayer can only be accessed from the second day of your island onwards.
I'm going to bed pretty much right now, so if you want them tonight you'll unfortunately have to reply in like 15 minutes. Then, I'll send you a Dodo Code (or you can send me one, if you prefer).