I got promoted to tech lead. Now what?

Also start improving your “management” skills. Someone recently linked me this list, there are some great resources for senior devs/tech leads on there as well: https://github.com/kuchin/awesome-cto

For me tech leadership is mostly about making the team run as efficiently as possible. Code reviews, pair programming, 1 on 1s, facilitating design discussions, etc

I also talk more with architects, product management etc and prepare the work for the team on a feature level. This also gives me opportunity to delegate part of the work so others can grow too.