Is your internet connection working?
Just try the following commands:
1. you probably dont have x, so you should aldready be in a terminal, otherwise get to one
2. make yourself the root user "su"
3. Update apt info "apt-get update"
4. Install the packages you want "apt-get install lynx", "apt-get install links", etc"
5. If you are looking for a package but dont quite remember the name look for it in your apt repos "apt-cache search link", "apt-cache search lyn", "apt-cache search mozilla", etc