The basic ideas in programming languages like C and all its variants (C++, C#, Objective-C, Java) and all imperative languages tend to be very similar.  The details of working with the programming environment (Mac vs PC vs iPad vs iPhone) can be more work, and a lot less interesting.  If you choose to learn one, the switchover time should be a couple of months or so to get going reasonably well, if you actually understand one environment well from the start.  That said, if you have a favorite, I'd start there, because switching is tedious and boring.

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EasyJapanezy wrote:

One more thing, for building a complete website from start to finish, or up and running successfully, I would need Javascript HTML and CSS right? I keep reading that this is all I need but then I hear all these acronyms like AJAX and client side/server side and a bunch of stuff like this. Do I need PHP to build websites or is javascript enough for now. I will learn PHP later on but I just want to focus on Javascript for now, or do I NEED PHP????

It really depends on what kind of website you want to make. Can you give an example? Something like kanji.koohii.com maybe? Because technically, you can upload a text file on a server and call it a website, but obviously you're looking for something more than that. 

HTML is where to begin. You can write a whole webpage in nothing but HTML, but it wouldn't be very interesting, as the page's content wouldn't change unless you edited the HTML file. Think something like an "About Me" page that just has a paragraph of text and a picture.

CSS is for styling purposes. This is where you make the website look pretty by picking colors, font sizes, and so on. Technically most of the things you can do with CSS can also be done in HTML, but that method has its disadvantages so no one does it that way anymore. The idea is that HTML is for content and CSS is for style. Separation of content and style is important for ease of maintenance. 

Server-side programming (PHP, ASP.NET, JSP, or others) is useful for dynamic content. There are a lot of things you can do with a server-side programming language, but a very common purpose is to interact with a backend database. Server-side refers to the fact that the code is executed on the server computer, and not the end-user's computer.

Database systems (MySQL, Oracle, SQL Server, etc) are used for storing persistent data. Like this forum, for example. There are a lot of topics and posts in this forum. The information for who posted a message and what text it contained is stored in the tables of a database. So there are not thousands of HTML pages for each topic you see. Instead, there is one PHP page called viewtopic.php (you can see it in the URL) and some URL parameters. Those URL parameters are used to pull the correct information from the database. PHP is used to query the database and use the results to produce a webpage with valid HTML code.

JavaScript is a client-side programming language. That means JavaScript code runs on the end-user's computer (the user's browser interprets the code). Personally, I think it's less important than server-side programming, especially at the beginning, but again, it depends on your needs. Think Gmail, which includes JavaScript by default, but allows a non-JavaScript version to be used. The JavaScript version is just nicer to use, as long as you have a fast internet connection, since it uses a lot of AJAX. If you have Gmail, I recommend taking a look at how the two versions differ.

AJAX is just a way to use JavaScript to interact with information stored on a server (such as in a database), in order to update a webpage without reloading it. A lot of major websites use it, like Google (the search-suggest feature), Amazon, Facebook, and more. For most websites though, the AJAX is non-critical, as it should be, because it's possible for a user to disable JavaScript. A good website still works with JS disabled (Google still works, but it just won't auto suggest searches for you), while a bad one breaks (Facebook just shows a blank page and no error message, last I checked). Of course this doesn't matter much for a beginner, but it's good to know for when you're experienced enough to really polish your websites.

Last thing to note, there is plenty of free and commercial software for web purposes. I mentioned that this forum runs through a PHP and a database, but it's not like Fabrice coded the forum's PHP and designed and built the DB tables from scratch. This particular forum runs on PunBB it looks like. Still, I'm assuming he did code some or all of the kanji.koohii portion, so all the above knowledge was still needed. There's also things like WordPress for blogs.

EasyJapanezy wrote:

I need a little advice.
I just became interested in programming and am not sure where to start. I want to ultimately be able to write apps for iPhones and iPads and program websites.

I would definitely get a Mac as soon as possible.  Obviously they are required for iOS programming, but there is a high rate of Mac usage in web development as well.

I'm not sure if you wanted a Japan slant to your answers, but if you want to be insanely marketable in Japan I would suggest you learn Ruby on Rails.  You can get started very easily with the free Ruby on Rails Tutorial.

EasyJapanezy wrote:

So it would be ok if I just jump into objective C and skip the other languages for now?
I mean you can just learn the languages separately without any problems right?

Yes, that's my experience.  I spent a few weeks learning Java by using it after programming in C for a long time.  It took a bit of work to write Java-style, but it's not hard.

That's different from memorizing all the different parts of the development kit, though.  If you want to switch to the MicroSoft platform later, you'll have a lot of new tools to memorize.