ebooks can b useful at tymz,but usually they r not so updated as our text-books,secondly.....sitting in front of pc n reading frm thr....dats too boring at tymez n can b even tiresum too......yet thrz an advantage of ebooks dat da thngs wich u cant find in text, r sumtymes available in ebooks n u can hav them frm thr as printed notes..so dats da gud aspect! generally speaking,it depends ,variations frm one situation to anothr r thr !