Syncing iPhone to laptop

So, I got a new laptop (PC) and I was wondering how I can sync my iPhone 4 to my new laptop so I can add music and stuff. My iPhone was synced to my old laptop also.
Please don't send me any Apple support links, they're useless.

Download the iTunes software onto your PC, it will be easy from there, make sure you have the connection adaptor. Once you have it, open it up when you have your iPhone plugged into your PC and somewhere you will find a sync button

First, you have to download iTunes. If that has already been done, skip this paragraph. If not, go to iTunes.com. Just click download. That's it. Now, let us begin…

Let's start by transferring those items to your iTunes library which you have purchased or downloaded via iTunes store/App store using your Apple ID. To avoid any inconvenience in the coming steps, be sure to uncheck 'Avoid iPods, iPhones, and iPads from syncing automatically' from iTunes Preferences.

Now we will try to authorize the new computer for use with the iOS device. Navigate to Store> Authorize this Computer. Enter your Apple ID and password (the one that you used for purchasing music and apps currently on your iOS device). This will take a moment. This is where we begin the process. Right-click your iOS device in the sidebar and click 'Transfer Purchases'.

You'll see the transfer in progress. This will transfer all the iTunes-purchased content from the device to the iTunes library, including music, apps, videos, books, etc.

Once the transfer is complete, click your iOS device in the sidebar, and click the 'Apps' tab. At this point, 'Sync Apps' will be unchecked. Click to check it, and iTunes will ask you if you want to replace all apps on the iOS device with the apps in the iTunes library.

Don't panic! Remember we've just transferred all the apps from your iOS device to your iTunes library, so it's just a matter of clicking 'Sync Apps'. Nothing will happen. Why? Because iTunes knows that all the apps which are in the iTunes library are also in the iOS device, so it would be really silly to erase all those apps and then reinstall all of them.So, nothing happens. From this point onwards, you can add/remove apps from your iOS device. All your apps are safe. Also, all the media content purchased from iTunes is also safe, since it was transferred to iTunes when you clicked 'Transfer Purchases'.