How to create a new user and grant permissions in MySQL and also creating a database ?

sudo mysql
[sudo] password for jeffrin: 
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mysql> CREATE USER 'jeff'@'localhost' IDENTIFIED WITH authentication_plugin BY 'sixer';
ERROR 1524 (HY000): Plugin 'authentication_plugin' is not loaded
mysql> CREATE USER 'jeff'@'localhost' IDENTIFIED BY 'sixer';
Query OK, 0 rows affected (0.49 sec)

mysql> CREATE DATABASE learning;
Query OK, 1 row affected (0.27 sec)

mysql> UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root';
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '('MyNewPass') WHERE User='root'' at line 1
mysql> UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root';
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '('MyNewPass') WHERE User='root'' at line 1
mysql> GRANT ALL PRIVILEGES ON *.* TO 'jeff'@'localhost' WITH GRANT OPTION;
Query OK, 0 rows affected (0.69 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.14 sec)

mysql>