Orchard Toys puzzles are my favourites. They're colourful and sturdy. First I thought that having puzzle pieces on both sides would confuse my boy, but it didn't. He knew to turn them all over to yellow - which is his preferred puzzle. He doesn't bother with the red bus.
It's a good intro to Twitter, and will definitely get you started. I especially liked the 20 min per day Twitter workout. Although trust me its going to take you much longer than 20 min to do all the things suggested. I would say at least an hour.