H... is for Humour

I have a thing for darker themes and plots; humour doesn't really appeal to me. I understand that it is an important part of any story and its presence is sometimes not optional. But I don't know how to read books or plays that are pure humour. Does one approach them with a light heart and a mood to laugh?
Fairly recently, I reviewed a book whose genre can be described as humour. Read my review here. I enjoyed it quite a lot, but I would never have picked it up on my own. Do you read humourous books? Is laughter the best medicine? Which ones would you recommend?  

*****************************************************
This is the eighth post for the April A-to-Z Blogging Challenge 2014.
Previously, Archaism, British literature, Critical Analysis, Drama, Edinburgh, Faust, Gothic Fiction

H... is for Hamish, the Hairy Highlander

I'm just back from the Highlands of Scotland and my head needs time to recover from and process all the beauty that I was bombarded with in the past three days. I'm scarred from the assault of sheer beauty and magnificence on my senses. Anyway, so for a funny one.
Hamish is a hairy coo. He is big, he is hairy, and he's pretty much the first thing you'll see in the highlands. He's also adorable and loves veggies!
He's really famous too; do a Google search and you'll find posts, pictures, forum - all for Hamish appreciation!

-----------------------------------------------------------------------------------------------------------
This post is part of the ongoing A-to-Z Challenge. Previously, Aye, Berwick, Cramond, Disability, Edinburgh, Forth Bridge, Glasgow.