if you’re the type of person who needs to plan and do that sort of thing, then yes. of course - if you’re not, planning is one of the worst things that you could ever do when it comes to your writing. i don’t plan anymore - i used to, but spent more time mapping things out and developing than i ever did actually writing out the story… so i stopped. but if you feel the need to do some sort of preparation and aren’t sure of what to do, you could try a few things in general
a bullet list works really well for specific ideals/details
sketching out a web in your notebook is also good
flow charts are boss
planning is good, but over planning is the worst. i suggest you try something not too rigid before going out and buying everything that you need for a story board. story boards are a useful tool, but there are a lot of others that can also help you successfully organize your work
i hope this helped!