Is there a way to see what each deduction or credit amount would be before turbo tax decides? American Opportunity,Lifetime or tuition?

No, only if you do the calculation yourself. I found this to be the case with many other tax preparation software versions this year, not just TurboTax. You can opt to change the selection, but then it forces you to go through the whole section again. I haven't found there to be a difference, but if you're curious, it doesn't take too much time to do so (select each one and proceed along to see end result, not the calculation yourself as that can take a while).

After, and only after you have completed the education section in it's entirety, will this work.

In the search box type the word LETME and then click the search or find button. Click the "jump to" link if it appears. (If it doesn't appear, then you don't qualify for any credits.)  Then you can work that through to see your choices. Only those choices you actually qualify for will appear.