First, get a host. Like insanegb.com or byethost.com then go to blogger. Under options choose host your own blog. There you'd be asked to fill in details, like login name, password etc. DONE

For wordpress, there are many hosts out there that can pre-install it for you, like both mentioned above. just click and install.

If you need a shorter URL, try freedns.afraid.org for really cool DNS support ones, like yourname.us.to or yourname.uk.to.

PM me if you need more help.