Besides means in addition to something.
You get to sample lots of baked things and take home masses of biscuits besides.
你可以品尝许多烘烤食品,此外还能带许多饼干回家。
Besides is used to emphasize an additional point that you are making, especially one that you consider to be important.
The house was out of our price range and too big anyway. Besides, I'd grown fond of our little rented house.
这个房子超出了我们的预算范围,而且也太大了。再说,我已经渐渐喜欢上我们租的小房子了。
Besides something or beside something means in addition to it.
I think she has many good qualities besides being very beautiful.
我觉得她除了非常漂亮之外,还有许多好的品质。