The question to ask at this point is, "How important is it that I do this?".
You have to come to terms with the fact that some of the things would be better done by someone else. You may want to read “Should you outsource your WordPress site management“ and consider outsourcing as a benefit to your business.
However the good news is that there are not many of the actions that you do in WordPress that you cannot simply undo by uninstalling or deactivating something you try. Add a plugin, activate it. If you don’t like how it works or it seems to be messing up your website, simply go back in to your dashboard and deactivate and deleted it (remember to delete it to get rid of all of it) and you are right back to where you started.
That's right WordPress really is that easy!
Don’t fear your WordPress, it is a well-designed tool for most all of your website needs.