Hello can anyone say me how to do crafting,what are it's uses and,what items do i require to do crating?how does it help me?

So many questions...I will answer each, one by one.
1. How to do crafting?
Ans. To craft an item, click on your home, then click on the slot in your house. There, you will see 4 boxes. Select the items you want to craft, and then you can craft it.
2. What are its uses?
Ans. Crafting allows you to get items you can't normally get, although the use of these is currently nothing. Also, there is a crafting level, which may allow you to craft better items(this will be added in future, crafting isn't completed yet)
3. Items
Ans. See this thread - [you must login to view links](Keeps updating)