Can any one explain each of these TAX terms in detail?

Okay I got my first pay cheque in the US, in Texas.... What are these tax terms..... What the hell is W/H TAX??!?!?! HELP !

Do I get any of it back ?!?!?!?!?! maybe?



FICA-OASDI

FEDERAL W/H TAX

FICA-HI