When your blogger you will be knowing everything about this. But if your freshers then its difficult to judge. My suggestion is that you create a free blogger blogs first. Try all the doubts and other things. After when your a professional blogger then you can switch to WordPress.
Most of the people love wordpress. But I suggest you to go for blogger because it have variety of things to change and use. More over you have got lots of things to learn. Wordpress is not bad, they have also got good widgets and templates. We can switch to blogger or wordpress viceversa whenever we need. So my suggestion is to start with blogger.com.