The last thing an inexperienced terminal user should be doing is installing a bunch of software without understanding how it fits together, how it is used, or how it is actually configured. If you want to understand your terminal stack, build it; don't have it built for you.
The better approach is to start from a basic setup. For example, with vim, don't use vim-sensible right off the bat. Instead, just use vim. If a need arises, research what you can set up to address it. If you are curious about what is out there, read through the source of plugins like vim-sensible, taking each option, reading the docs for it, learning a bit of vimscript as needed, and only adding stuff to your vimrc if you really understand what you are adding. Don't add a bunch of things all at once. Do one at a time, and try it out for a while.
The better approach is to start from a basic setup. For example, with vim, don't use vim-sensible right off the bat. Instead, just use vim. If a need arises, research what you can set up to address it. If you are curious about what is out there, read through the source of plugins like vim-sensible, taking each option, reading the docs for it, learning a bit of vimscript as needed, and only adding stuff to your vimrc if you really understand what you are adding. Don't add a bunch of things all at once. Do one at a time, and try it out for a while.