著作権情報

この資料は MIT ライセンス で提供されているので、条項を守れば自由に利用可能です。
参考： MIT License - Wikipedia

ライセンス全文 / License full text ↕

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

たとえば、この資料に書いてあるコードを改造したり組み込んだりして作ったプログラムのソースコードを公開したい場合、その冒頭付近などに、コメントで次のような文言を入れれば大丈夫です。

/**
 * @preserve Credits
 * 
 * "p5.js でゲーム制作" ( https://fal-works.github.io/make-games-with-p5js/ )
 * Copyright (c) 2020 FAL
 * Used under the MIT License
 * ( https://fal-works.github.io/make-games-with-p5js/docs/license/ )
 */

これはあくまで一例なので、著作権情報とライセンス情報が分かる状態になっていれば、細かい表記は自由です。