First you want to make sure you a wifi plan so that you don’t get charged more and you need to have a Gmail account.
You can use “googleplay” option for installing the file. You can do it by using your phone or using a computer.
If you are using a computer. Type the address “www.googleplay.com” on the address and hit the “Enter” button.
You will get the above screen. You can see categories, top free, top paid applications.
Select which apps you want to add then you will get same like the following screen and you need to click on “install” button.
You will be asked to sign in using your “gmail account”
So sign in using your gmail account.
Now you have to select your device
Now from the drop down menu of “sent to” select your device. May you need to connect your device with your laptop using Bluetooth.
If the application is not compatible with your device you will get a message.
Now click on install and the application start to get download in your phone.
HOW TO INSTALL USING MOBILE PHONE
Go to “playstore” icon in your phone.
You will get a screen where you can see category list, top paid, top free, featured list.
Now select which one you want and click on “install” button.
This is how you install application in Samsung galaxy phones.