Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.
Split View is a feature available from 10.11 El Capitan onwards. It is not available in 10.9 OS X. See here -> https://support.apple.com/en-in/HT204948
You can get this feature by upgrading the OS X to latest version from Apple > App Store > Updates > OS X Free Upgrade
However, you can also manually resize two windows and put them side by side in older OS X versions. To make a window bigger or small, put the mouse pointer on the bottom right edge/corner of the active window and this will change the cursor to resize. Then click and drag to increase or decrease size. Then put it on the left side. Do the same other window and put it on right.
If you have any difficulty on following the steps above, please let me know and I will continue to help you
You can click and drag the window around. Click the gray part of the window at top and you can move it around.
I did sent you the instructions. Didn't you get it ?
You can click and drag the window around. Click the gray part of the window at top are (next to the three buttons - close, minimize etc) and you can move it around.
There are also third party applications that bring the Splitview like features to older OS X. One of the app is BetterSnapTool. You can get it from here --> https://itunes.apple.com/us/app/bettersnaptool/id417375580?mt=12
To make a window bigger or small, follow the steps below;
1 - Put the mouse pointer on the bottom right edge/corner of the active window.
2 - This will change the cursor to resize curson. Then click and drag to increase or decrease size.
To move the window around (to left or right), put the mouse on the tap gray color part of that active window and then you can just click and drag it to move it to left, right, top or bottom.
Let me know if you have any difficulty
You can put the mouse to any corner (top left, bottom right, top right, bottom left), then click and drag to increase/decrease the size of that window.
Then click on the gray color part of the window (top part) and click and drag it around to put to anywhere you want.
See this sample video from Youtube --> https://www.youtube.com/watch?v=ot6LBAcnscQ
If you are unable to open the above video, click this link --> https://www.youtube.com/watch?v=ot6LBAcnscQ
The video shows how to resize the window.