Transferring website to Dreamhost

I transfered my domain from bluehost to dreamhost, also transfered cpanel data from bluehost to dreamhost but now i dont know how to upload the data to my new site.

I not even familiar with FTP transfer etc.

I am very new to the website business.

Guide step by step to proceed/

Note: i already downloaded my backups to my computer

The easiest way for you to upload your files is via DH panel --> Domains --> Manage Domains --> WebFTP

Remember to upload your files to /home/username/ directory.