I second MiniMe's recommendations:
Check out the
ARRL's new ham area and its
Find an exam any state or for
Texas Exams HAM radio is dependable and reliable communication link to family, friends and other HAMs that can usually get first hand information to you and/or link you to others that can assist.
I recommend you also look into your local communities HAM repeater groups and emergency communication groups.
You probably have one or more local groups that could assist you in the exams, and give you a general outline of the most active radio bands and repeaters.
Here is a list of the
119 radio clubs in Texas Taking the exam with your wife is a fun activity and like MiniMe said easy. 25 mile communication is possible without a repeater depending on the terrain, your gears operating power and antenna. Communicaton through a repeater is very easy at this distance.
Around here 2m band is the good choice for active repeaters, and terrain issues. I would recommend a 2m radio or a multiband radio with 2m and 70cm (and 6m or 1.2GHz depending on what is hot in your area). I would look for 5W output for handhelds to give you greater chance to transmit 25 miles. I would also recommend a 5/8 wave antenna for any handheld rig, and an external antenna for the car. Some of the smallest handhelds are real nice to carry but do not have 5W output on their normal battery. A mobil rig (car) would be great with 20-50W output and a nice roof mounted antenna.