If the kind folks at WordPress cannot help you install your WordPress for free, see here, there are alternatives. If you are inclined not to even try installing WordPress yourself, you have a couple of solid choices that cost you nothing or very little. First, let me say that it’s not difficult to install WordPress even if you are completely tech-unsavvy. But, I do understand how some would rather not touch complicated looking files in gibberish language. Visit WordPress’s page on the 5-minute installation. It actually takes 5 minutes if you’re somewhat computer savvy, but maybe 10 minutes if you’re not. Also visit WordPress’ main installation pages if you’re installation requires a bit more elbow grease for whatever reason.
Now, on to the nitty-gritty. There are usually two types of installations you can do. Either a new installation or an upgrade. Upgrades may or may not be simple depending on the difference in versions. If, for example, you’re upgrading to the current version, 2.5.1 from let’s say version 1, which I hope to goodness you’re not, things can get a bit complicated…maybe.