Good, that takes the initial cost out of the equation.
I can't really think of any of the top of my head at the moment. Maybe throw a few suggestions/recommendations.
I don't know what you'd be interested in or would like to do, so I can't throw anything that isn't generic.
All of the software that I am about to recommend is (at least to the best of my knowledge) free of charge and many are open source.
You could try:
.
Graphics Design - There's GIMP and Krita
. I've also heard good things about Paint.NET
.
Audio Composition - Music usually comes to mind. Can't really recommend anything for this, I used to recommend Audacity but that's gone to shit recently.
.
Programming - There are many beginner friendly languages out there. I would recommend Python as a starter language if you want to do that. Most programming languages have toolchains that are 100% free of charge.
.
Video Editing - There's Kdenlive, Avidemux, OpenShot, Lightworks (Paid software, but there is a version that they provide free of charge).
.
YouTube - This goes hand in hand with video editing. You don't have to be good, just upload what you feel like.
For non-creative work, you could try:
.
Server Administration - For this I would recommend downloading and installing either VirtualBox or VMWare, these tools allow you to run an operating system inside your already existing OS.
.
Or you could just learn how to troubleshoot - There will always be a need for people who can fix computer issues, and it's not really that hard to do.
All you really need is a way to speak to your client so that you can guide them through the process. Though TeamViewer can allow you to access a client's computer (with permission of course).
The best part is that none of these necessarily require you to even have an employer in order for you to make money. You could absolutely go independent with any one of these (except for server administration, but you COULD host a website on a VPS using the knowledge or something like that). If you don't make money off of it, then maybe you'll just pick up a new hobby.
The one thing though is that you have to put in the effort, you will never escape having to put effort into things. And don't go into it with only a profit motive, you will hate it and be VERY disappointed if you fail to make money.
That's all I could think of right now, I wish you good luck. And If you don't mind, may I request that you kind of tone it down on the whole "I could kill all of you" crap? It's not really good for your psyche to be in that mental state all of the time.