Well, it all depends which was you want to go.
The organic route.
Biotabs are a lot less hassel you just drop one in your soil and water and it takes care of the rest.
But for beginners and if the is your first grow I'd suggest getting yourself a Grow, micro, bloom from either general hydroponics or advanced nutrients
They have lots of grow, bloom, micros and are really easy to use.
Look into jungle juice trio. Only like 25$ for the 3 and they do a great job
You might want to look at adding a calmag to that list also it never hurts and most often than not ppl tend to need a some stage of their grow.
Good luck.