At first hello and welcome.
1. The cursor disapears after a few seconds in the cockpit but it should get visible when you move the mouse again.
2. Start with the training missions and read the corresponding manual chapters. It helps to get started. There you learn the startup, flying and the weapon systems etc. Reading the whole manual first and then jump in the cockpit is very confusing in my humble opinion.
Watch videos on Youtube. Nearly every aspect of the sim is covered by really great and professional done training videos, both from ED and the community. Sometimes the training missions are a bit confusing, thats the point when the videos can help out.
You can also go online and ask for help/advise. The community is very welcoming and helpful. Don't hesitate to ask if something isn't clear. "There are no stupid questions only stupid answers".