|They gave you an account username and password which you type into their login system. From there, you can access the Control Panel and find your way to the file management system and access your web documents.|
Also in the Control Panel is an area to setup FTP (File Transfer Protocol) accounts. After you create a FTP account, you can use a FTP client like FireFTP (a Firefox browser addon) or FileZilla, input your FTP credentials, then transfer files to and from the web host similarly to how you'd copy/paste files around your computer.
Using FTP is generally faster because it's drag-and-drop opposed to the file manager system in which you browser for each file and upload it. You can drag many files/folders at once and let the program upload for you.
There is a benefit to using the file management system. Say you're uploading a large system like phpBB or WordPress that has many directories and files. With FTP, it has to initiate a transfer, complete the transfer, ensure the transfer was complete of every file in the system. If the system has hundreds or thousands of files, it could take a while. In that case, it's better to upload a compressed file (.zip, .rar, .etc) and extract it using the file manager (or FTP client if your program allows it). Although they're generally the same size, uploading one compressed file and decompressing it is quicker than uploading hundreds or thousands of individual files even in FTP.
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