Here are some useful commands to work with BitLocker Drive Encryption (manage-bde). I had to use these commands on a computer with a built-in TPM to enable BitLocker while having access only to a remote command prompt tool:

Check current encryption status:

manage-bde -status

Enable BitLocker on the C: drive and create a random numeric recovery password (need to restart after this command so the hard drive will start encrypting):

manage-bde -on C: -recoverypassword

Show your Protectors IDs and Recovery Passwords:

manage-bde -protectors -get C: