Other than how I found out about it, the blogfest is pretty easy. Go over to Stephen Trump's Website and add your blog to the linky (he's hoping to get at least 100 - Chasing Revery signed in at 80). Then, on Monday, re-introduce yourself to the blogging world. Stephen has an example for you if you're looking for a bit of structure or inspiration.
Easy! And, it gives you a blog topic for next week. Check. ;-)
He also tells you about the A-Z Challenge on his blog, something I will be talking about next week, but only with a day to spare. So if you're looking for another blog hop that will last the whole month of April, be sure to check out that information, too.