I like to check the origins of English words, because I think it is a fun to learn about them and also it is very useful to learn vocabulary. I use Oxford's dictionary for this purpose.
Therefore, I want to mention about a website which includes etymological information of Turkish words. (about 30.000 words).
PS: The website is Turkish only (both interface and content).
I hope it helps you in learning Turkish.
There is the link to website: