SQL Server Help

I have an assignment due and can’t figure it out. Just general code to what would execute these functions would be very helpful.
Write SQL DML statements that address the following requirements:
Update the Employees table and give all employees making less than $10 per hour a 5% increase.
List all records/fields in the EMPLOYEES table in order of the employee’s last name.
List all records/fields in the EMPLOYEES table in order of the department name.
List employee names, hourly pay rate and department name for employees making between (and including) $10 and $30 per hour.
What is the total organization payroll assuming each employee works 40 hours per week?
Using the tables you created in Unit 2’s project database (excluding the Employees and Departments tables), create one or more SQL queries to demonstrate your understanding of the following concepts:
WHERE clause using comparison operators
ORDER BY clause
JOINS
Aggregation