Once you have the basics figured out it's important to look into browsers, as well as search engines. Browsers are what allow you to search the internet, and search engines, are websites on the internet, that allow you to search information through them. Browsers include Google Chrome, Internet Explorer, Firefox, and Safari. Search engines are websites like Google, Bing, Yahoo, etc.
Web browsers and search engines do not store information long term. It is now possible to store information in what is called "the cloud." This is a form of a website that allows you to store personal items on it such as music, photos, documents etc. It takes away the need for things like CD's, Floppy disks, USB drives, external hard drives, etc.
The best way to access health information will be to use a web browser of your choice, which then leads to a search engine. Once to the search engine you should be able to type in the web address that will lead you to your health information. Technology is a big part of this world now, so it's important to learn the basics. Especially when it relates to your health.
References:
PC Help Center. (n.d.). Retrieved from https://pc.net/helpcenter/answers/difference_between_router_and_modem
The first app I found is called Mango Health. It allows you to plug in your medication schedule, and will send out reminders to take them. This app also allows you to record your blood pressure, blood glucose, weight, water intake, activity level, and mood. It will also remind you to eat better. This app is helpful if you just forget to take your medications, or just need little reminders sent to you. You can decide how much information you are willing to give it. When looking to get an app, it's important to realize that they will need personal information to make it more personalized. More information can be found on https://www.mangohealth.com/.
Medical ID is an app used in case of an emergency. This app does require you to give it quite a bit of access, but all make sense for what the app does. This app wants you to put in personal details. The information that it asks for are name, weight, height, blood type, allergies, medical issues, and any other information. This app allows the information to be accessed from the lock screen by double tapping on the notification, in the case of an emergency. More information can be found at https://medicalid.app/. 
Samsung Health is very similar to Mango Health, but comes with Samsung specific phones. Once the app is set up it can track many things. It will track your activity level, the amount of sleep you get, weight, heart rate, stress level, calorie intake, etc. It keeps track of the calories burned as well. The more information you plug in, the more accurate the app will be. More information can be found at https://www.samsung.com/global/galaxy/apps/samsung-health/. 
One app I use often is called Sleep Cycle. I really like this app because you can punch in the time of day you need to wake up, and it gives you a half hour window of when the alarm will go off. It listens to the noises you make at night, to detect where you are at in your sleep cycle. It tries to wake you up when you are at the end of each cycle, and will feel the most refreshed. It bases your information off of data it collects through sound. More information on this app can be found at https://www.sleepcycle.com/.