Thank you for reaching out Olga. While you can definitely start with any amount, Markus recommends you have $10,000.
You can go through this video for an advice from Markus:
https://www.youtube.com/watch?time_continue=6&v=ArLbKlL6QWE&feature=emb_logo
We also suggest that you attend our Free Bootcamp so you will get more knowledge on trading.
Check our Bootcamp schedules here: https://bootcamp.rockwelltrading.com/free/stock-trading-bootcamp-all/

Yes you can. Ideal to have $10,000 but if you have a margin account $2000 would give you $4000 in total buying power with margin.