Default [Q] KitKat ES File explorer / Torrents

Hi, I am sorry if this has been posted before, but I can not find a good answer:
Can I use ES file explorer freely on my external SD card with Kitkat?

Have a video and a music folder on my ext card, and copy files from my NAS to these folders. (Using ES File explorer)

Also, can I let a torrent client download files to my external SD card?

All this without root.

I am currently on Black Berry Q10, and I can use ES and A downloader freely, A shame if this is not the case with android anymore..
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