for nutes, personally I found great results with Jacks fert lines, Veg&Bloom one part and
Dyna Gro line.
Again for me, I like shit easy, I dont mix anything other than tap water, after letting sit. I use and make my own alfalfa tea for alternating feeds. I also incorporate a way of feeding by "making it rain" (a good h2o drench, then follow up with a "feed") I have been shown and seen they tend to "wick" the moisture faster after a good "rain" ;) . I veg in a
happy frog amended mix (hf, coco, perlite, hydroton chow with a few additions) hand watering and for flower a 4x4 flood and drain on part of my tent and scrog on the other, then drain to res with top feeding. For me, the biggest thing I have began to learn is read YOUR plants, they will tell you what they want.
Again, good luck. Ask questions, dont fall for all the hype and enjoy the hobby ;)