As to crypto exchanges, I am more into Binance, Kucoin and MEXC. Now, talking about altcoins that must have a good potential for growth this April or May because of the Bitcoin halving, I am suggesting to go with memecoins which I understand has more chance to jump ahead of the competition. So maybe one can start with Dogecoin, Shiba Inu, Pepe and my latest favorite which is Bonk, Though they are supposed to humor us and to remind us that life has to be merry, many memecoins showed their strength in the past and has been a vehicle for many to gain more wealth in the market. Though am not guaranteeing whatsoever that come halving time they will really go upwards too...heck we don't even know if the same thing can happen with Bitcoin in the first place as the market is really unpredictable and so volatile.