I learned how to do it but I cannot figure out how to apply talents to the other branches.
With your first points you have to start in the centre group of talents. After maxing 3 of the smaller talents you can pick one of the big ones.
After that, you'll have unlocked the next tier ring. From there you'll repeat the process (max 3 small, take the big one) 2 more times. Completing 2 groups in the 2nd ring by taking the big capstone talents will unlock the 3rd ring.
In the 3rd ring you only have to max 2 smaller talents before you can pick the big one.
Hope this helps.