720p or 1080p videos for 1366x768 resolution

[kacper6768]

For a monitor resolution of 1366 x 768, is it better to choose to download videos in 720p or 1080p?
Why don't video downloaders have 768i download options?
I found information on Google that the resolution of 1366 x 768 is 768i. Is it true?
There was a description on Google about the difference between 720P and 720i, but it was very complicated and I didn't understand any of it.
Is the resolution with the letter "p" or the letter "i" better?
Is it true what was written on Google that 720p is better than 1080i in HDTV?

My monitor refresh rate is 60Hz, does it make any difference for the choice of resolution?

 

Processor type - QuadCore AMD A8-7410, 2500 MHz (25 x 100)
Motherboard name - HP ProBook 455 G3
Motherboard chipset - AMD Avalon, AMD K16.3
RAM 4 GB
Hard Drive: HGST HTS725050A7E630 500 GB
DVD ROM - hp HLDS DVDRW GUD1N
Graphics
AMD Radeon R5 Series (Beema)
PCI Express 2.0 x8: AMD Radeon - 530 - R7 M340 (Meso) 2GB

 

[Electronics Wizardy]

Typically downscaling videos will look better, so go for the highest resolution you can, in this case 1080p.

 

4 minutes ago, kacper6768 said:

There was a description on Google about the difference between 720P and 720i, but it was very complicated and I didn't understand any of it.

I is interlaced. Basically half the fame changes, then the other half. This is basically a relic of NTSC and other anologue video standards, and almost never used with digital video these days.