I'll start things off...
Pleased with - my little red/orange/yellow patch which really worked this year for the first time. Orange-flowered euphorbias (which I wasn't that keen on till they did a lovely display this year), red and orange-yellow geums and a few red poppies, it looked great (although getting a bit past its best now).
Frustrated with - everything seeming permanently overgrown. I think we just have a bit too much in our garden and too many mature bushes etc so it's a constant battle to keep them from going totally massive.
Surprised by - apart from the hedgehog recently, probably the reappearance of the huge yellow achillea I tried to take out last year, and the fact I actually quite like them this time round! I also keep being painfully surprised by the mini rosebush that appeared in the middle of the berry patch and keeps attacking my legs
I have learned that - I think we have at least 2 different types of raspberries (we didn't plant them). The ones at the front are much squishier/crumblier than the ones at the back, and have a more watery flavour too so I think they're actually a different type. Might try to replace some of them with the better ones!
I would like to learn - how to get rid of massive snowberry plants which are very hard to dig up! Oh and to get better at supporting things properly as they keep falling over.