I'm going to build a desk on my own for the first time. can u suggest me about the kind of appliances i should use for building a desk?
It depends on the desk style. A simple flat top. rectangular desk could be done with a screwdriver, a hand saw and a hammer. You can buy legs and a top right from the store. Cut some 1x4's for a skirt and attach the legs.
If you want drawers, you will need power tools.