An interesting question on many levels.
Is a notebook and pen the only conveyance of information or will you have your memories retained on the return to the present day? Do you devise an encoding scheme prior to departure to maximize the bits of information that can be written in the notebook?
How will you act on the information when you return? Will people believe you? Do you want to come back with some verifiable information so people will believe you? Before leaving, announce that you will visit the future, and ask everyone with a private key to sign a message to their respective future selves, so that their messages from the future can be verified by the present self?
What is the goal of this endeavor, to personally profit or for all of humanity to profit for mistakes that will be made between now and 2050?
You could spend the entire 24 hours teleporting to various places on Earth (and possibly Mars and the Moon), talking to random people in all socioeconomic strata of society, all the while taking copious notes and have them write signed messages in your notebook. Kind of like a yearbook from the future.
Or do you ask specific questions about science, medicine, advances in technology, materials, so you accelerate humanity's progress forward?
When you return, do you decide to mint your notebook as an NFT collection? Auction it off? Go on Joe Rogan to talk about it? Keep stock, crypto, market prices to yourself so only you can benefit? Become a philanthropist with the profits?
So many questions.