I would suggest using one of the starter solution that comes with FMP.
Here is a link to the FM Training Series FileMaker Training Series | FileMaker
There is a Learn button at the top of www.filemaker.com website that is full of information.
FM is easy to use compare to other development type software, but it does take time to learn.
schamblee has given you good advice for learning. To answer your specific question, you can do a list view and simultaneously enter data into a portal (which is how you see multiple related records instead of just the first one). I would use a popover object with the portal in it, so you conserve screen space in a List view.