I made my account yesterday, I want to speedrun Ninja Gaiden for the nes. Does anyone have any tips?

Hi and welcome! If you want tips about running the Ninja Gaiden game, you should look at the guides, forums, or the discord server of the game on the site: https://www.speedrun.com/ngnes

If you want general tips on how to use the site, how to record runs, how to submit, etc; The FAQ thread is a good place to start: https://www.speedrun.com/speedrunning/thread/pt010

Thanks for the help/reply!