mantra,
I have delayed answering because,
1) I am definitely not an expert
2) I do not know how good your computer skills are.
3) Your question was very wide.
(I think you said in another thread that English is not your first language, that is at least one more language than I speak
, so I will try to speak plainly, and I will start at a very basic computer level)
To begin, you will need to decide how much control you want over the display.
1) If you only want to display your photos, there are numerous 'sharing' sites, both free, paid or both. For example:
flickr
smugmug
zenfolio
With these, you use their pre-built galleries. I use flickr, but can't offer any real comparison, I just happened to start there, and stay there because it's familiar.
2) For more personal or custom display, you need to:
a) create the actual HTML code to display/operate the site, and
b) find a web hosting service, to which you will upload and maintain the above.
Creating the HTML code is a very wide and deep subject, and there are many ways of doing this. LR can help with a portion of that by creating the 'gallery pages'. You will need to add the main pages which hold the galleries together. You will upload the files with FTP, and LR can help with that as well.
Web Hosting is also a very wide and deep subject. There are many options, both paid, and (I assume, but don't have any experience) free, but advertising supported. I personally host my site at GoDaddy, but again, I cannot offer any comparisons or recommendations, I am there because that is the first place I started, and changing is not worth the trouble.
Now, that is a very simple start. You can tell us if it is too simple, or needs to be further explained.
......brad