Help with technology and chocolate cake (Montevideo)

I am looking for a friendly Expat who is willing to help me (one time) get a better grasp/understanding of the various possibilities for using Facebook and also my smartphone. I am new to both and would hope that there is a patient Expat who wants to help. My phone is not broken and I currently use Facebook and my phone at a basic level. Thus, I don't need or want to hire a technician; just a friendly skillful person. Remuneration is some great chocolate cake at La Petite Patisserie (Pocitos) and perhaps practicing speaking Spanish while eating.