Question: How can you open multiple files when you're already browsing one?

If I do:

```
:e myFile

```

then myFile open in another buffer, but obviously:

```
:e myFile1 myFile2

```

open a new file named "myFile1 myFile2"...

It's easily possible to open from outside, be it in tabs or buffer, but from inside, still did not find...

Answer: 
`:e` and its relatives only accept *one* argument. See `:help :args`:

```
:argadd myFile1 myFile2

```

or:

```
:next myFile1 myFile2

```

You can use wildcards too:

```
:argadd *.rb

```
you can use like this:

lets say you have opened one file using vim named a.c

now go to command mode.
use sp (split)
example:

:sp b.c

This should work for you.
You can traverse through different files by pressing ctrl + (two times w)