Most shared hosting providers, who offer a cPanel or similar control panel would have Fantastico which you can then use to do a "one-click" installation of something like WordPress and keep it updated from within the software when new updates / security patches are released.
Some hosts would even offer a "trial" - so, that would serve you well to evaluate their service as well as try out the "automated" installation for your blog.
Since Wordpress MU is released several hosts offer managed Wordpress hosting (most free) simply search for "powered by WordPress MU" and I am pretty sure you are going to find a host that fits your needs.
I'm not talking about on how to start one but I'm talking about what should or could I make my blog information on? Like what should or could I post on it? About my life or what?
If you don't know what you are going to blog about why start one?
Sure you can blog about your life but you can do that on Twitter.
No need for your own hosting. Blogs usually have a subject that the "blogger" is interested in. Anything from some type music to what Hillary Clinton did today (politics, computers, cooking or whatever).
Usually blogs are subject related. If you just want to talk about whatever is happening in your life get a free MSN blog or start a Twitter profile. Both are free and the software is already there. (Be careful what you say about yourself, don't give anything to the identity thieves or something that miht haunt you on a job search in a year or two. There's stories of people who posted about the wild stuff they did at a college party or such and later the human services director where they really wanted the job "Googled" them and found it.)
To go to all the trouble of starting something like a WordPress blog -learning & updating the software etc. is overkill if you are just going to post about the concert you went to last night or how lousy the food was at some restaurant or that your relatives birthday party was great... the free sources are just fine for all that until you settle on something you want to seriously "blog" about.
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