I never watched Navy CIS Los Angeles nor the "Original" Navy CIS till now. As I heard some pretty good things about this show, I just wanted to know, if I should better watch Navy CIS first before I watch Navy CIS LA?

As a long time Navy CIS fan, and a current NCIS:LA fan, I don't think that it matters if Du watch one first. The shows are very different. The only similarity (other than occasional crossovers of characters) is that both deal with crimes in the Navy and Marine Corps. Navy CIS is Mehr of a standard cop Zeigen (ie murder of the week) with a very rich character arc, while NCIS:LA is about a division of the same investigative organization but their investigations tend to involve Mehr undercover projects and live victims.

The problem I could see with starting out on Navy CIS is that they are now 7 seasons in. The Zeigen invests so much into the characters (I'd say Mehr than any other cop Zeigen I've seen) that is helps to have the backstory. I watched the first season (I started it from JAG), and then went away for 3 years. When I started watching again, I had to really learn what had happened in the backstories to be able to understand what was going on.

NCIS:LA is still in it's infancy as a show. We are just getting to know the characters and the group dynamic. It is probably a Zeigen that is still early enough to start watching and not feel like you've missed too much.

There are some people who Liebe Navy CIS but can't stand NCIS:LA. and there are others who tolerate Navy CIS but really enjoy NCIS:LA. I, personally, find both to be highly enjoyable shows. I hope that this gives Du some idea!

It might help in some ways. For example, in one episode of Navy CIS Los Angeles, a main character (Abby Scuito) from the "original" Navy CIS guest stared on Navy CIS LA. Watching Navy CIS might help Du know Mehr about that character.

I think Du should watch the original Navy CIS so you'll know Mehr about the show.

It doesnt really matter which one u watch first

Ive been watching 4 bout a Jahr its really good to get the ropes i would watch a few of Navy CIS then though it deosn't matter

No,definately! U dont need to watch Navy CIS first cause the characters are different and the series stands on its own. And in my oinion NCIS:LA is a lot better than the original!!