Making a website

Hi /tech/, what would one have to learn in order to be able to make a website that has a couple hundred pages and a forum. An example: You enter the site for the first time and it detects that so it asks you to complete a questionnaire which then leads you directly to links to specific sections chosen on how you responded. Of course, the user would have the option to not answer and be redirected to the homepage.
So, what should I learn specifically to be able to make something like that and where would I find such information?
The hardware required for maintaining something like that would also be nice to know in regards to pricing and such considering a maximum of 150-200 people simultaneously browsing.
I'm sorry if the questions are stupid or shouldn't be asked here.

Not too much, just some basic HTML really, you could probably create something like that in a modern word processor. With regards to the hardware I wouldn't bother hosting it yourself there are plenty of cheap hosting packages available which will probably give better bandwidth and reliability than your home internet connection.