I have had quite a few students over the years ask me about the Good Samaritan Law and how it applies to CPR and administering First Aid.
Like many other states, Texas has a Good Samaritan Law which protects citizens in the event that they opt to provide emergency medical assistance. 
The premise of the law is that if an individual voluntarily and in good faith volunteers to assist another individual experiencing a medical emergency; he or she will not be held liable for any damages that such care may cause.
In addition, it is also a protective clause for a volunteer first responder and to unlicensed medical personnel that are not licensed within a medical profession.
There are exceptions:
Willful or Wanton Conduct
Expectation of Remuneration
Cause of Harm
Legal Assistance
The Texas Good Samaritan Law has been revised many times so its always a good idea to be familiar with last rendition.

Information retrieved from https://www.hg.org/article.asp?id=18803

When disaster occurs; there is often little time to react or even prepare. However, putting together a plan before disaster strikes can help alleviate undue stress and allow for everyone to become familiar with the protocol in an emergency.

A few things you can do include:
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1. Prepare an emergency kit with bottled water and nonperishable food items; flashlight, battery powered radio, batteries, extra cash, cell phone with extra battery and charger, first aid supplies, and critical medications, and blankets and extra clothing. Its also important to have things stored in your car such as flares, tool kit, and extra blankets.
2. Learn CPR and Emergency First Aid.
3. Meeting location: Decide on a location where everyone can meet in the event of an emergency and decide how you will communicate with each other.
4. Map: If you live in an area that is susceptible to flooding or other natural catastrophe; decide on alternative travel arrangements and always have an extra map for evacuation purposes.