I had to go to the Edesur office as map below to register as a new user:Electricity: go with your contract to the office of edesur that's most near (or edeeste depending on the sector) and your cedula, they'll let you fill a form that says what you have in your apartment, based on that they calculate your consumption and what guarantee you need to leave behind. One or two days later they should be connecting you.
Wifi. Go to Claro and contract an Internet plan, it will come with a wifi router. You'll need a cedula and maybe a guarantor, or if you have a credit history in the country you should be fine.