LLC Questions

I am looking to create an LLC for my trading activities in the financial markets. I started in December of 2020 and have been learning a lot of sense then. Here are a few of my questions regarding an LLC;

 

1. Can I deduct equipment like computers, mice, and monitors? (this equipment is used for trading/business purposes only)

 

2. Can I deduct books, seminars, courses, and subscriptions (charting software) that were bought for educational purposes and will help me operate this business efficiently?

 

3. And finally can I still take these deductions even if I lose a little money? (just started trading less than 2 years ago with a lot of trial and error)

 

★All of these things I bought that helped me learn and operate this trading business were bought in the previous year, am I still allowed to deduct this stuff even though an LLC was not created prior to the purchases?