The iPad works just like a normal computer, the major difference noticeable by anyone is the major size difference, the iPad is arguably the most compact computer in the world. The general idea inside an iPad, is very similar to a net book or a laptop.

The only difference between a laptop, net book, and an iPad is the fact that and iPad runs on a super mini micro processor, this allows the iPad to cut down on power usage also allowing the iPad to run ultra high definition LED lighting.

Having smaller processors and LED lights allows the iPad to operate with no heat, this means you do not have to worry about your iPad over heating, or having your ipad burn your legs. During long durations of use. With the iPad running very efficient hardware it's ion battery can last any wear from 8 - 12 hours without needing any charge.

Micro Sim is a memory card for your phone. It holds phone data.

Memory cards (SD Card, Flashdrives) Hold any data you want to put on them. (Data transfered with computer)

The IPad comes with internet capabilities (using WiFi, Wireless Internet) or using a data plan from a phone network.

A micro SIM is used to call someone. A iPad does not use SIM, unless you buy the iPad 3G.

If you don't have iPad 3G, it will only have Internet if you have WiFi. 3G allows you to have Internet anywhere, and is faster than the normal WiFi + EDGE (slower than 3G, but still Internet). However, you can't call anyone through the iPad, even if you have 3G. You can't call, if you're wondering. You can use Skype, however.

A memory card is something that you store things in, and has nothing to do with Internet. iPads doesn't have a memory card slot, so no need to worry about that.

Just if you didn't know, 3G doesn't stand for third generation iPad. The third generation iPad isn't even out!