The Garmin Edge 520 Plus is the updated version the Garmin Edge 520 that was released in 2015. The 520 Plus has an advanced GPS navigation system as compared to the Edge 520. The Plus comes preloaded with Strava Live Segments and the Garmin cycle map with turn-by-turn directions. The Edge 520 is great for training but not navigation. It does not have cycling-specific maps, and does not have turn by turn directions. It only has breadcrumb type navigation.
When you first start riding your bike, you may not realize how vital your pedals are. Depending on what type of riding you are doing will determine what kind of pedals you need. Will you be riding dirt trails, road riding, or commuting? You may need the power transfer and efficiency of a clipless pedal. Or the ease of a platform petal that allows you to remove your feet quickly.
I will explain some different options for you to make the right decision for yourself.
The benefit of clipless pedals are that they allow you to use your key leg muscles during the pedal stroke. You get more forward propulsion during the revolution, especially during the upstroke.
There are a variety of clipless pedals. Most pedals fit into 2 categories, on-road and off-road.
Make sure you pick the correct pedal based on the type of riding you will be doing.
I have researched these issues along with the different sitting positions and resistance types to help her. You can make an educated decision based on my research to decide what type of stationary bike to buy.