Tri care.. help???

So my husband and i have been married for 8 months. Currently so confused on how tri care works and what all it covers. Literally anything helps. I need a new glasses prescription and need to make a dental appointment and don't have a clue on how to do it. I also don't know how to find a Gynecologist either. Someone help a girl out because lets be honest our husbands are zero help.

Also I currently already have a doctor that tri care assigned me so I'm covered on that part.