Library for the ITEAD SIM900 GPSR/GSM minium sustem module

Hello all!

I have a ITEAD SIM900 GPSR/GSM
( One-stop Online Shop For Smart Home, HMI Display, Airspy, Diy Kits l ITEAD STUDIO) I was looking for a library to control Arduino outputs, read and send using SMS msg. I found 2 libraries that are the following:

Please let me know which is the right one to use with this module, also, can some one give me a sketch example on how to send and receive a sms?

Are there any special procedures for installing the library other than those in the Arduino installation procedures?

Thanks in advance for your help.
Manuel