When you're just starting out, using your phone or webcam to make some clips is acceptable until you can get yourself set up to film proper clips.
Just make sure your lighting is adequate if you're using something with lower resolution recording.
I guess the editing depends on how much you have to edit, are you just shaving a few seconds off the beginning and end? Your phone editor should suffice, if you have to start cutting and editing footage together though, I would highly recommend using a computer and a proper editing program for that.
You can get away with using imovie or windows movie maker, but their editing options are pretty limited.
If you don't already have access to proper editing software; I use Filmora (
https://filmora.wondershare.com/), honestly I like it more than adobe premier pro, it's way easier to use (and way cheaper) than adobe premier pro. I don't make elaborate videos, so it's absolutely perfect for what I need.
You can also get decently cheap cameras that are great for self shooting,
I use this one <- It has a flip up screen so you can see what you're shooting and auto focus. I love it.
You shouldn't need to hire out for videos, just make sure the quality of the footage, the lighting and the color balance is as close to perfect as you can get it during filming, it will make editing a lot easier.
You can also check Youtube for videos about setting up your shooting space/lighting/editing/setting a camera up to record proper videos; and you'll do fine!
Hope that helped! Good luck!