ZSNES board

i dont understand this, can someone just private message or aim me how to get the best snes games on my computer i have played this before at my school at there were good games on it before it was removed

is there a site that has a large library of games? i dont know where to find these

i just downloaded the newest version but how do i get games on there? im no computer wiz but i looked around and couldnt find it my aim is illinihoopsfan5 sorry if this is common knowledge and/or posted allready 1000000 times