Hey Navdeep! Congrats on your acceptance and great job on getting a head start on looking for resources to help you! The Student Success Centre has a writing workshop offered as well as others for multiple choice, studying tips, etc. There's also writing assistants you can get. Check this out:
http://studentsuccess.mcmast er.ca/...-services.html
Also, TAs (teaching assistants who lead the tutorials for classes) are always willing to help, give you tips or even edit your thesis/essay drafts!