[Koha] how can I search books from my library

Venerable All I have some difficulty in KOHA 3.00.04_fixed, although I refer documentation but im facing difficulty. problem are listed below.plz tell me step by step solutions 1) how can I search books from my libray ( own database) 2) how can I replace the KOHA name and its monogram with my own 3) how can I give different priviledges to different users. 4) how can I place books in shelves Nouman Qadeer +923337262979 noumansoomro@gmail.com