Y u no Wi-Fi? :(

I really like the BB I got (which I'm super happy for cause I've had my previous phone since 3rd year high school. yeah loooonnggg time) but I can't seem to connect it to any Wi-Fi. Grrr this is so disappointing!! I'm the complete opposite of a techy so this is just really frustrating HAHA :|

Does anybody know how to figure this out?