Tricare Insurance

Hey guys. I’m a newly wed and my husband just went overseas last month. This whole insurance thing is really confusing to me and I’m hoping y’all could give me some clarity. I have Tricare Select/Standard. I’d like to go to the doctor and get a check up. Does it pay for everything or just a percentage? Also, for dental, I really want to get braces and get my teeth fixed. How do I go about doing that and how much will they cover? (I’m 19) Thank you all in advance 💗