https://newstitchaday.com/how-to-knit-the-invisible-cast-on/
This video knitting tutorial will help you learn how to knit the Invisible Cast On. This cast on creates a rounded edge and is best used when elasticity and strength are needed.
https://www.interweave.com/article/knitting/lace-cast-on-bind-off-techniques/
The lace cast-on and bind-off methods yield flexible edges with enough give to accommodate the most aggressive blocking.
https://www.susannawinter.net/post/2018/12/21/61-provisional-cast-on-methods-tutorial
6+1 Provisional Cast-on Methods [Tutorial]
Provisional cast-ons are a way to create a temporary cast-on edge for your project, with the intention of knitting seamlessly in the opposite direction later. By using a provisional cast-on method you’re able to create a smooth, invisible join where the two directions of fabric meet.