Task 1 : Create a Compute Engine instance, add necessary firewall rules

Goto Compute Engine -> VM Instannces -> Create Instance.
   Name : <Given in the lab>
   Zone : <Given in the lab>
   Series : N1
   Boot Disk : Default

   Tick : Allow HTTP Traffic
          Allow HTTPS Traffic

Click Create.

Task 2 : Configure Apache2 Web Server in your instance

SSH to 'apache' instance and run
sudo su -
apt-get update
apt-get install apache2 -y
service --status-all

Task 3 : Test your server

Click on External IP of apache instance.
Congratulations, you're all done with the lab 😄
