Specifically to new tech lead roles, I'd recommend "Peopleware" and "Behind Closed Doors"
And a couple of articles specific to your situation: http://firstround.com/review/this-90-day-plan-turns-engineer... and https://blog.stackexchange.com/2015/08/developer-turned-mana...
Specifically to new tech lead roles, I'd recommend "Peopleware" and "Behind Closed Doors"
And a couple of articles specific to your situation: http://firstround.com/review/this-90-day-plan-turns-engineer... and https://blog.stackexchange.com/2015/08/developer-turned-mana...