How to split a window and let the new window be on the right or below?

:bel(owright) {command}

e.g. 

:bel sp {filename}

:bel vs {filename}

:bel new {filename}

How to split window and open terminal in vim?

 https://dev.to/mr_destructive/vim-terminal-integration-4pfp

^w v

To split window vertically. (the same file is opened in the new split window.)

^w l

To go to the newly split windows on the right

:term

To open a terminal. (The window on the right split horizontally, and the terminal window is on the top.)

^w j

To go to the split window below the terminal window

^w c

To close the window below the terminal window

How to split windows in vim, or say how to use viewport in vim?

How to split windows in vim, or say how to use viewport in vim?

https://www.linux.com/training-tutorials/vim-tips-using-viewports/