Quote from MessyButtHole jumpThinking about giving away my cards but in the slim chance that i have some cards worth anything is there a way I could know just by looks or certain names i should look for?
Hard to say, but chances are your cards aren't worth much unless they were immediately preserved the moment they were removed from the package. There are few you might be able to get $3-$5 for if they're in really good condition. Also consider that there are a bunch of us who played Yugioh as a kid, find a shoebox full of old cards and think "I might be able to sell these!" That also drives down the value.
While I can't confirm it, my hunch is that first edition holos and promotional cards (from McDonald's or the movies) would be worth the most.
What are your Local Area Connection settings? Since the devices can connect to the laptop but not gain internet access, my hunch is the laptop is not allowing devices to access the internet through the laptop's wired connection.