Welcome to this forum. We all expect pictures of your loot especially those of us who are sidelined by winter weather or malady. (Get well soon Uncle Willy!)
I started at this field where they used to have fairs in the 50s and 60s that is now public use land where kids play. It has no improvements but it gets mowed a few times a month. I chose it as my starting spot because I knew I wouldn't be getting a lot interruptions or have a lot of followers and I knew I would be learning and might over dig a hole or two. In other words a fair amount of targets, a few real good targets, and easy digging where I couldn't ruin anything. If I was starting out all over, I'd pick pick a bark chip area (playground) at a time when it is not too crowded for my first hunt. Schools are my favorite place to hunt now, including the bark chip areas at most elementary schools. A saltwater beach is not a hunting option for me because I live too far away. A busy beach will refill with loot a lot quicker than a park or school but will probably be hunted by plenty of hobbyists. I don't think I would start at the beach until you are familiar with the detector. Practice pinpointing a lot to start! Take note where you think the target is and where you actually recover it. It won't take long to get proficient, probably a week or two.
I started in the coin mode not all metal for 100 hours as your manual will probably suggest. I am not fond of digging iron.
Keep a log. Take pictures.
Find a suitable treasure chest to store you loot. I picked mine out and thought that if I filled it in a year I'd be happy. I had it filled in 2 weeks. I started using a big tackle box but the handle broke when it was about half full.
Just my opinion.
Chris
The real place to start is your own yard.