Buying/registering vehicle in another state

In June, I will be relocating to TX for my first job out of college. However, I am still in my first truck that I bought in high school and it's barely running. I was thinking about purchasing a dependable vehicle before I moved but then I realized I would be hit with fees/taxes in LA and then TX a couple months later.

Can anyone explain the process to me? Is there a way to register it in TX without a physical address to avoid being hit twice? I figured at least a few of you gentlemen have come across a similar scenario...