What you need to know before watching
Here is a list of everything you need to know before watching Lord of the Ring:
Element #1
The first element that you absolutely need to be aware before starting is that the sum of the duration of all three movies is around 11h 30 minutes. Each movie during around 3h long and the last one, 4h30. This is an important factor to consider because you won't be finishing anytime soon. Personally, when I had to rewatch it for my class, it took me 5 days. In fact, there is a lot of content to cover and the battles last at least 1 hour. That is for a lot of people a big turn off because they are used to classic 2-hour movies.
Element #2
The second element to be aware before is the fact that the orcs ( the enemy's creatures ) can be very terryfing. I remember when I was a kid, I was terrified each time I see those beings. They are so well made and realistic that even today I get moved by the images. Those movies were made in the early 2000, and they are to this day really hard to beat in the category "Makeup and Hairstyling". To give you a taste of what they looked like, I've put a GIF down below. Note: I wanted to embed a video but all of them have disabled their embeding options.
Element #3
The last elemnt I want to discuss is that the movie is not made for sensible hearts. Even though, the graphics and the visuals are extremely well done, It is still violent and brutal.