How do I go about creating a website like facebook where each person logs into their own profile?

in order to create a website with that much functionality you will need to know a lot more than HTML. you will most likely need a database to store all the information. I recommend trying MySQL since it's free. www.mysql.com once you have a database, you need a web server to host your website. for this I recommend Apache because (of course) it's free. http://www.apache.org/ in order to pull this all together (i.e. in order to retrieve information stored in your database and display it to HTML pages) you will need to learn a programming language. the easiest programming languages for you to learn would be either PHP or Java (JSP). with both of these languages, you will create programs that are in charge of sending and retrieving information from the database. once your write these small programs, you will add some code to your HTML which references these program files to dynamically add content to your pages. basically, if you haven't programmed before (HTML is more scripting than programming) then I recommend you start reading up! hope this helps - good luck with the site!