Default D link dir 615 Router

ok Here this goes i am trying to load firm ware into my router latest firm ware from dlink was installed, followed a video off you tube went to dd-wrt website to download the needed firm ware , i am SO GREEN to all this i didnt work and i am stuck , I want this to have a secure tunnel as i can go around on the net with out being tracked ty , And what does the term BRICKED mean ty and yes your laughing but at least i am trying Peace Viper ...