How To Take Notes On Ipad With Apple Pencil. Thats all that is needed. If you have an Apple Pencil or a stylus from Apple Best Note-Taking App is the best note-taking app for you with these cool features.

Maybe its just my school but I never see anyone using an iPad to take notes. You can do the same thing for the next two tools which are Marker and Pencil. I used an iPad all through high school and the old school ways just work better imo.
You need to find note apps in the iOS App Store that support the Apple Pencil and smart stylus input in general and PDF documents.
I copied these pdf documents to my iPad Pro using AirDrop. This will enable stylus mode in Apple Notes. Best OCR app for note taking with pen. But it didnt work out.
