Miracle grow works just fine. All of the nutrients out there are just a bunch of marketing companies trying to out match each other. I'm not going to say they are junk or garbage or that I'm loyal to any brand. You have to learn his to grow before you worry about nutrients, lights, co2, the numerous growing techniques etc. I can tell you a few simple steps that doesn't overcomplicate anything
1. Choose a soil that is as simple and has no added nutrients
2. Mix perlite at 25-33% with your soil...2 cups of dirt to 1 cup perlite, 3 cups dirt to 1 cup perlite etc. Vermiculite works too, but I prefer perlite. You can even use styrofoam pellets if on the super cheap.
3. Use a 2 gal pot from start to finish.
4. Remember I'm simplifying things and you will learn new techniques once you understand how things work
5. Place seed in middle of pot 1/2" down. Use tweezers and don't touch seed. Cover and lightly water...NO nutrients in water.
6. Seed will sprout 95% of the time. Do not water until soil is dry
7. Put plant under 16 hours on 8 hours dark.
8. Water the plant only when soil is dry As it makes the roots stronger when it has to search out water
10 days after sprouting use 0.5 ml miracle grow ( yellow container high nitrogen 12-4-
per 2 liters
9. Move up to 1.0 ml per 2 liters after 20 days. These amounts aren't maxing your plant but you will never get nute burn.
10. After 35 days min you can just change your light schedule to 12 on and 12 off. Feed your plant one last time with the yellow bottle. You don't need to flush
13. When you first switch over you may think your plant is too small, but it will start to stretch and show flowering within a couple of weeks or sooner
14. You can start feeding it the miracle grow in the purple container. blooming fertilizer (5-30-5) as it has a higher P and K as nitrogen is not needed as much. The miracle grow fertilizers have all the micronutrients too
15. Tap water is fine if you are in a major centre but bottled is better...I forgot that part.
16. 1-2 ml of this fertilizer to 2 liters of water every feed seems to be fine. Just remember that each species is different in its ability to take nutrients.
17. You need to research when to harvest because it is very different amongst species but won't be sooner than 55 days. Too early is bad and too late is no good either. Oh yeah just feed up to the end because you won't know when it's ready to flush. That's ok your next time will be easier.
18. Cut down, trim and hang for at least a week or until the stems break crisply and not bend softly. If they bend softly its too wet and you don't want to mess with mold let it dry longer. Dryer is better than wetter.
19. Once dry, put in glass jars...any kind will do as long as it is VERY clean and free of food odors, with good seal. Store for at least a month opening every day for for a couple of mins and a great big whiff. Just to give it a quick air exchange. Just do it to make sure you get no mold growth. Keep in the jar for at least 1 month then enjoy. The buds get tighter the longer you cure them. Even airy or light bud gets more dense over time. I'm by far no expert, but I know it works.
20. The four biggest mistakes are overwatering, over fertilizing, too much heat, and lack of air circulation.
I hope this helps you to enjoy your new hobby.