I'm trying to make an itinerary for my trip to London, but I keep finding myself getting lost in a sea of information. I know quite a lot of what I want to do, I just don't know how to best plan for my days. I don't want to be going all over the place seeing sights when it would make sense to group them in a particular order, etc. I wish there was a web site or app that you could put all the places you want to go and then they'd group them together for you.
Any suggestions on how to best go about this?