Disk Space
Disk space is one of the most important considerations when purchasing a web hosting account. The amount of disk space included in your account will determine the number of files and emails you will be able to store.

Disk space is usually measured in Megabytes (MB), the amount of disk space you will need will be dependent on the type of files you wish to host. If you have a lot of photos you would like on your website you will need a lot more disk space than if you only wish to have a basic website with mostly text.

Bandwidth
Bandwidth is another more technical term for Data Transfer (see below).

Data Transfer
Data Transfer (or Bandwidth) refers to the amount of information you can 'serve' from your website. Every time someone visits your website they will use up some of your allocated bandwidth, every time you download an email you are also using up transfer. Basically it is a measure of the interaction between your hosting account and other people accessing your site or your email (i.e. when you download your messages).

Sub Domains
A sub domain is much like a normal domain name except it is created beneath a normal domain. For example if you own the domain name mybusiness.co.nz a subdomain might be: photos.mybusiness.co.nz. Sub domains are a useful way of separating your website into separate components if you wish to monitor the website statistics (i.e. how many visitors to your site) each area has had.

Email Accounts
An email account refers to a designated email address from which you can download and send messages. These are also known as POP Email Accounts, they are the electronic equivalent of a physical letter box or post office box.

Forwarding Email Accounts
A forwarding email account isn't really an email account, it is more like a redirection service. A forwarding account allows you to specify an email address which you wish to have email sent to.