Thinking of developing a website as a hobby

[mistercrabb]

Sorry if this post is a bit vague..

At the moment I have very little to do in my spare time. I normally spend it lurking on forums etc and I think I should actually devote my time to something useful.
I was thinking of learning some form of web development with the long term goal of making a complex website.


Now, suppose I theoretically wanted to create Twitter from scratch.
My limited knowledge tells me that I would need to learn the following (or equivalent):
HTML
CSS
PHP
MYSQL

Am I right? Missed anything? Is this even feasible?
I taught myself C++ with little trouble, so I imagine I could pick this up quite fast.
If anyone has any useful pointers or would like to tell me I'm stupid, feel free.
Just looking for thoughts/experience really.

Especially shortcuts, for example can I just get a WYSIWYG editor to deal with the frontend and cut down on some HTML coding?

Cheers,
Rob

 

[mistercrabb]

Thanks guys, very useful comments.

As for content, I was planning on learning a few basics, then working out a design/plan and then learning the rest as I go along with it.

My (long term) plan will be to learn (X)HTML/CSS first, and then PHP/MYSQL. I'll stick Javascript in there somewhere too, probably in between CSS and PHP

Also, how does everyone feel about www.w3schools.com as a tutorial/reference resource?

 

[mistercrabb]

Made a good start today, ran through the beginner HTML tutorials on http://htmldog.com/ which was recommended by w3fools.com for being a good intro tutorial website.

I also installed PHP/Mysql/phpmyadmin anyway, for no real reason.

So it's all looking good, gotta just crack on with HTML/CSS for now.

Thanks all!