There are so many trading places you just have to find the one that you like the most you know there are so many that i cant tell you witch one youu should use becuase everyone his own reason why.
yes but i think it totally depend on your experience skill and interest, if you are interested in alt coins then you should invest in alt coin and if you have good experience in gambling they you should invest your money in gambling, and if you have no skill or experience then you should simply hold your bitcoin and hope that it will also give you a good profit .