Dear Sam,
It is fantastic news that you are finally moving to London for your new job! I am absolutely thrilled that you will be living in the same city, and I would be happy to help you settle in.
For a place to live, I highly recommend looking at Islington. It has a wonderful community feel with a blend of leafy streets and vibrant cafes, plus it is quite central. You would be within walking distance of some great parks, which is a rare treat in such a bustling metropolis.
Regarding getting around, the public transport is extensive. The Underground network is your best bet for speed, though the buses are excellent if you want to see the sights while commuting. I suggest downloading a travel app immediately to keep track of live updates and delays, as the system can get quite busy during peak hours.
As for making friends, there are many local hobby clubs and evening classes you could join. I am part of a weekend hiking group that meets every Saturday, and we are always welcoming new members. It is a brilliant way to socialise while exploring the outskirts of the city.
Let me know when you arrive so we can grab a coffee.
Best wishes,
Alex