Accepted method for installing new software ?

Since my recent experience in trying to get a Korean keyboard to work I have run into countless problems, due no doubt to me (in my dumbness), looking around and installing whatever seemed right.

So, what would be a better method ?

I am thinking something like this:

1) Do research to see what the community likes as to useability.
2) Within Yast/Software Management, see if the package is there.
3) If yes, install it and test away.
4) If not, still within Yast, try and find an alternative.

The products that I am doing this with right now are for the Korean typing and there seem to be 2 of them
1) ibus
2) fcitx

Now I don't know if they are mutually exclusive or if I could install both and see which my wife prefers.

Which brings me to another question.
ibus has a lot of different bits to install, so what would I do if I wanted to uninstall it ?

Thanks