There's sort of a limited "notebook" capability built in to the game: Macros. Write a macro with info on the nodes you like to gather from, using lines like this:
Code:
/e Adamantite: Azys Lla <24,6> 11AM/PM slot 6
/e Darksteel: CCH <24,19> 1AM slot 3
Then put the macro on a quickslot for easy access, and it will echo your notes to the log when activated.
Because macros are limited to 15 lines, you might make one macro for Miner, one for Botanist, one for Fisher, and put them on the hotbars for each class.