If you do choose FoxFarm Ocean Forest here is how.
1 bag FFOF
1 bag(small) FoxFarms Light Warrior.
1 bag perlite
1 bag(small) dolomite lime
Use a 12-20oz solo cup. Mix a handful of FFOF and FFLW and mix it in a container or bowl. Fill the solo cup with the mix. Lightly water cup before seed is put in, it's best to allow cup to dry out a little before seed goes in. Once you have germinated seed, create a hole with finger about a fingernail deep or a little more and dump seed in carefully. Lightly pack dirt over hole.
Then after 1-2 weeks you need to transplant into a larger pot, you can either plan to transplant two more times or just the once. If only once be sure pot is large enough for an entire grow cycle. 3-5 gallons indoors. If twice transplant into about a 5-8" container.
The second and final container should be a mix of 80% FFOF and 20% perlite with 1TBS of dolomite mixed in every gallon of soil.
Whether you transplant only once or twice, that should easily bring you all the way through veg without having to use nutes, only water being the FFOF has nutes in it.
If you want more details and help hit me up in private message. I can't respond until tomorrow. Peace.