Galaxy S2 Help

Ok i have a few questions.
i have gone from an iphone 4 (jailbroken) to a samsung galaxy SII
i prefer the samsung to be honest a friend mentioned there was a way to install apps on the phone without paying for them by downloading something off the market called app installer and downloading the apps off the internet then installing them with the app installer once dragged on your phone
2. how do i close a webpage down in the internet browser
3. what is data network mode ? it is deactivated at the moment is that between 3G and 2G ?
Answer #1
1. i use this website
http://forum.mobilism.org/portal.php?mode=articles&block=aapp
you can just search for a app and then you can download the apk to the computer. then just move it to the phone using usb or wifi
and just install it.
2. i’m guessing you are using the default browser, just click back and once you exit out of the browser is should be gone. although i recommend you download dolphin browser. it is a lot better.
3. data network mode is just internet using from your mobile phone company. i think the default is 3g, but you can select it to use 2g only. but not sure about this question 100% as i don’t use data.
Answer #2
ok will try the dolphin browser thanks for your info also how do i install an app using wifi ? as it would be nicer to do
Answer #3
you can install free apps from the android market using wifi.
just go this site
https://market.android.com/
just find a app you like and once you click install you log in using the same account you have used on your phone.
and then when you next go wifi or 3g it should automatically download to your phone.
for cracked apps there might be something like this using a app on your phone. but i generally
download from the mobilism to my computer. then use this
https://market.android.com/details?id=nextapp.websharing.r1
to transfer the file to my phone and then i use a file manager to click on the apk which installs it.
but a quick google search brings this up
http://technomondo.com/2011/11/26/manage-your-android-phone-on-computer-through-wifisend-messagesmusicapps-etc-download-now/
looks quite good.
Answer #4
You would need Wifi Explorer, which is for free. Then, you start the app in your phone it’ll give you an IP so you can enter your phone over wifi, then u just make a new folder or click on an existing folder then put the .apk app from mobilism which i use, u can also u warez-bb there is a nice upload BarraxusXL(not sure if thats his name is spelled but i just spelled it how i could remember it lol). after doing that you have to get a file maanger which is also free but I think the gs2 has it already, find the folder where you put the apk, click, install, done. rinse repeat.