No, the fact that आप have never read the पुस्तकें या seen the lord of the rings फिल्में is not an issue. The पुस्तकें give आप और info but आप don't have to read them to see the movies. I saw the first two Harry Potter फिल्में before I read the books. I hope this helps you.
No. Actually I literally knew nothing about The Hobbit या Lord of the Rings until I saw The Hobbit and then I watched Lord of the Rings and read the books. It's a good idea to start पढ़ना the पुस्तकें and watching the LotR फिल्में though since they are amazing and you'll understand more.
Well, I do find that abit strange that आप haven't seen any of the other movies, but the thing about the पुस्तकें is quite normal for many people. Well, except for me. I do believe that to become a devoted प्रशंसक आप must do all those things, but आप shouldn't worry about it because you're just starting out. :)
I have not seen any of the फिल्में (if it´s not counted when I watched part of LotR when I was very young and I can´t remember much about it) but I have read The Hobbit, The Fellowship of the Ring and The Two Towers. I will read The Return of the King next. I also read part of Silmarillion...
No, it is not an issue, but I do think आप are missing out! I would advise आप to read the Hobbit first, and then read/watch the Lord of the Rings. I absolutely loved the पुस्तकें - they are a literacy marvel in my mind - and I really truly recommend your पढ़ना of them.