Hi Everyone ,
Please go through the below URL's to understand the basic overview of SAP GTS module and it's application areas .
SAP GTS Training Day 1 Part 1 by G.V.Rao ( VENKAT ) - YouTube
SAP GTS Training Day 1 Part 2 by G.V.Rao ( VENKAT) - YouTube
SAP GTS Training Day 2 by G.V.Rao ( VENKAT ) - YouTube
If you need any documents in this regard , please let me know I can help you in this regard .
Sri Krishna