VeraCrypt is a useful option for users encrypting sensitive local disks and containers. Start with a small file container and practice mounting, dismounting, and restoring a backed-up copy before encrypting important storage. Start with a small, representative task so you can check the results before extending the setup.
For device or system encryption, review the platform requirements and recovery procedure before changing the disk layout. Consider the practical trade-off: lost credentials can make data unrecoverable.