April is prime time for making increase (at least it is when there isn’t a cold front blasting through) and while splitting hives is simple, effective and helps to manage swarming – you might also be interested in giving queen rearing a try. Now is the time to go for it if you are.
Randy Oliver has a new article on his website Queens For Pennies which details a simple and rather unique method for producing a bunch of queen cells from your very best one queen – very little special equipment required compared to other ways to go about it. This article also has a very good illustration of how to graft with a Chinese tool. You really should check it out.