Setting up your first trading account(s)

Evening (at least it his here in the UK)!

This is actually my first post to t2w so I'm excited to become apart of the community :clap:

A bit about myself - I'm yet to trade live but I've been paper trading and reading for at least 14 months now. Therefore I feel its about time I jumped in and began. The only questions I have left to clean up are as follows:

My trading platform is ninjatrader and I aim to trade ES and/or YM - Is their a particular good broker for that? I hear a lot of interactive broker in relation to my question, but not so sure.

Another question- being in the UK, how does all the banking work if i'm trading US markets? I assume I go to my bank here in the UK (lets say LLoyds) and ask for a US (dollar based) account - I get that. From here I assume my initial money gets deposited into this account.
So lets say I make successful trades (at least I'd hope :eek: ), and my account now stands at $1.2k. Ive decided to withdraw the $200 but want it in pounds, how does this work without being eaten alive my transfer commissions?

Now last question I promise!

For those who are familiar with ninjatrader what the f*** does this all mean? A ninjatrader customer service mentioned it to me.

" Your account & funds will be held by our FCM partner Dorman Trading. Your funds will be held at BMO Harris Bank in a customer segregated account "

Thanks for the help!

Setting up your first trading account(s)