Early voting has started in Texas. So many options it’s difficult to know who to vote for! Luckily there are some local guides, like this one from Stonewall Democrats of Austin.
https://bluevoterguide.org/endorser-org/Stonewall_Democrats_of_Austin_/TX/2799
I also like this guide from the League of Women’s Voters group, which gives you an overwhelming amount of data on each candidate but doesn’t offer a candidate selection for you.