What is the difference between TRADITIONAL CHINESE and SIMPLIFIED CHINESE?

I am working on a mnemonic list project that will be printed. I noticed on git hub that there are 10 different lists. Most of them are different languages but two of the lists are CHINESE. One is TRADITIONAL CHINESE while the other is SIMPLIFIED CHINESE.

I have decided I am going to print my project in all the different languages so that people of the various languages can acquire my project in their language.

My question to the Chinese people is: Would you want to have a choice between these two language types in your language? Or would my printing the project in one or the other be sufficient? And if only one is necessary which one should I use?

Thank you for your time. My apologies for writing this in English.

Kresp