Fo shizzle.
My coco brand of choice is Botanicare CocoGro.
General Hydroponics CocoTek and Canna Coco are both what I consider to be worse quality. I build this opinion on the run off of the CocoTek being far too high (it requires a lot of flushing). The Canna Coco I got recently had an unusually high amount of sticks and leaves, nuts and trash, inside of it. In addition I am still washing 300ppm to 400ppm every time I feed right now. In is 700ppm, out is usually around 2000ppm. This is after tens of gallons of run off over the course of 4 weeks.
A lot of people dis Advanced Nutrients
JUST because they advertise. I would argue that a great majority of information available on Coco Coir/Fiber comes directly from Canna's advertisers and much of what they espouse I've found to simply not be true when it comes to coco. Personally, I've been burned on Canna (during flowering) too many times to ever consider using them in coco again for Cannabis.
You can use any of these products though but the other stuff you will need to rinse very well before using.
Botanicare CocoGro comes compressed. You will need to expand it with water. Sometimes I'll mix 5ml of Cal-Mag plus in with the solution I use to expand the coco. This has had great results for me with the first two weeks of life being powered by what little nutrition is attained from those. In coco it is more about electrical equilibrium of elements (say that 5 times fast... Shit... I can't even say equilibrium "fast") and the charge of calcium and magnesium aren't going to burn your plant up. Rather they provide a healthy CEC and allow the seedling to keep what little nutrition it starts with in the plant.
A charge imbalance between the plant and the media will force ions from inside the plant to be leached into the media in order to establish a balance. This might sound familiar if you ever took HS Chemistry, or Biology, and you understand osmosis.
For lighting I use a variety of CFL bulbs, all daylight spectrum. I have some 5000K, 5500K, and 6500K bulbs ranging in wattages from 23w to 27w. I place these bulbs in Clamp Light Reflectors. All of this equipment is available at a hardware store like Home DePot, Lowes, or Ace, though sometimes you won't be able to find diversity in your light spectrums. That is okay, but I do get better growth from a little variety in my CFL spectrum as long as it is all over 5000K.
I also use a fan on my plants. This is something I haven't worked out perfectly, but a 6" oscillating desk fan or clip on fan is perfect usually. You just need a gentle breeze to knock them around a little, and you don't want it to be constant. I have made the constant breeze mistake before and it forces the young plants to transpire too quickly. The immature root system cannot move enough water to the leaves which are "sweating" and as a result you get a little wind burn on those precious first leaves.
I try to keep my seedlings always over 70 degrees, even at night, and during the day time I find they do best at 78.5 degrees. You can range from 76 to 80, but do your best to keep it just under 79 and they will flourish. Humidity is one of those things... Sometimes I have it really high... Sometimes it is really low... Either way they seem to do alright. Aim for 50% and they'll be alright. I think the proper humidity range for these plants is somewhere between 60% and 30%. Anywhere in there is fine.
Personally I also find Canna Rhizotonic to be an exceptionally good root zone conditioner. It is a bit expensive for the Liter, but a 250ml bottle would be fine for you and the root system you get from that product makes it worth its weight in gold. Let's just say I haven't managed to find out where "too much" is and I've used it up to 30ml per gallon on week old seedlings.
Here's a picture or two that might help bring some things into clarity for you:
So here is the process:
Expand CocoGro
Fill small sized "containers" with about 4 ounces of coco. Party cups work too but are better for people who will transplant to coco as you'll need to feed it before you transplant and you'll need those nutrients around.
Poke a hole about 1 inch deep. 2-3cm is the area to aim for.
Drop in a seed.
Cover it with coco, ensuring the seed is completely in contact with the media.
Place a CFL bulb a few inches above the coco. This keeps the media a little warmer at the top and will provide light to the plant if it pokes out when you are not around.
Every day add approximately one ounce of water over the spot where you placed the seed until you see the cotyledon (seed leaves) above ground.
Once above ground keep your bulbs within 2 inches of the plants.
Also being using the circulation fan immediately.
I prefer an 18/6 light schedule.
Everything after that point is just a matter of not over watering, over feeding, or over loving. Plants do surprisingly well with LESS attention. This process will take at least 50 hours, with almost every plant above ground in under 100 hours (~4 days from planting).
I hope my method an experience can benefit you. There are a lot of ways to grow and I'm not going to say my way is the best (because I might find a way to do it better) but I cannot think of another method that has worked better for me, personally, in my own garden.