Installing Ubuntu is not that hard but there are some stuff you need to have before you can install it to your laptop. You will need a USB thumb drive(or a CD). The thumb drive should have at least 2 GB capacity. I will be listing the steps needed for installing using a USB drive. I also recommend you take a backup of all your important data in some external hard disk or thumb drive.
First of all you need to download the right .iso file. You say that you are not a "techno geek" so I would recommend you to download Ubuntu 14.04. This version will be supported until sometime in April 2019. Th other version is supported for a much shorter period of time. I am assuming that you would prefer not to go though the trouble of updating your laptop too many times.
You also need to get the right architecture for your laptop. You are saying that your laptop currently runs 32-bit windows and has 2 GB RAM so I would recommend you to get the 32-bit version of Ubuntu. You can download the 32-bit version of Ubuntu from Ubuntu website. You have to choose the 32-bit version from the drop-down list.
Once you have the correct .iso file. Head over to this site to download the bootable USB creator tool. Once it has downloaded run the program. Now just follow the steps in this link to create the bootable USB drive.
- Select Ubuntu from the drop-down list
- Choose the correct .iso file you have downloaded
- Click create
- Wait
Once you have prepared the USB drive, shut down your laptop and conect the USB drive to one of its ports. Now switch it on and boot to the USB.
Once Ubuntu has booted, you will have two options. "Try Ubuntu" and "Install to Disk". If you want to try running Ubuntu before installing it, click the "try Ubuntu" button. This will allow you to use Ubuntu without making any changes to your Laptop. If you like what you see, you can install Ubuntu. There will be an icon on the desktop for installing Ubuntu. Just double-click the icon to start the installer.
Now all you have to do is follow the instructions shown in the installer. Its a fairly simple process to install the Ubuntu OS.
I hope this answers your questions and hope you enjoy your time using Ubuntu.