Please don't say that, not to me, not to a potential client, and not even yourself. You see, underestimating your computer skills is the equivalent of a monolingual translator saying that he or she doesn't like languages. If you can turn on your computer, you can do it! Start with simple things so that you can get the hang of it and eventually do everything you want and more.
First of all, you should know that you don't need to learn every single feature of a software program. All you need to know is the basics for now. I mean, you can do so many things with Microsoft Word, but who has mastered it? You probably just know how to type, change the font, apply both face italics and the like. And that's probably all you need to know.
Spend some time every day getting to know the features of the software programs you have on your computer. Click on all the menus and see what each item does and evaluate whether it is important to you. You should also take advantage of any hotkeys associated with the program. They are also known as keyboard shortcuts. This is because it is faster to keep your fingers on the keyboard versus taking one hand off and putting on the mouse and steering it to the appropriate button or menu to be clicked.
Subscribe to a blog or YouTube channel that talks about the Windows operating system and Microsoft Office. These are, after all, the basic building blocks of your computer success.
Subscribe to PC Mag or Computerworld and read all the reviews on hardware and software before you buy.
But don't stop there. Explore the world of software. You don't necessarily have to spend money—–or any money at all—–on programs. There is freeware and there is shareware followed by freemium, which gives you usable software for free, but if you want more features, you have to pay for it. I like to acquire new software in two ways: I need something that will perform a task like OCR (optical character recognition), so I search for the application that fits the bill. I see some software I like, like a video editor, and explore it and see what it can do for me.
Don't forget to check for free paid software at both Giveaway of the Day and Shareware on Sale.
If you don't know, just ask. There are oodles of online forums with people who are knowledgeable and can steer you in the right direction.
Unfortunately, if you are a Windows user, you will most likely come up against an error message somewhere down the line. If it gets too complicated, then you can enlist the services of software experts who can connect remotely to your computer and fix your problems. Of course, you could also have the ubiquitous Tech Guy come over and do it, but I think these days, online is the way to go. I would recommend Box Aid, as I have had success with them, and unlike other similar services, they will connect outside the United States.