I understand google can give you a million different answers so it is sometimes better to ask other growers for advice, but a lot of these things you ask can be answered in a search engine because they are general information. A lot of things are also figured out along the way through observation.
You want to start with seed germination and vegetative growth. Do a search for 'seed germination cannabis' it will most likely show the paper towel method or direct planting. I prefer planting into starter cubes made from peat moss, I am not sure if you have access to these. Plant seeds sideways with the pointed side and round side pointing left and right. Its always given me good luck.
You are going to continue your journey with the vegetative stage. Searching for 'humidity for cannabis vegetative' will yield a lot of good information. Read a few links and get a decent judgement. Another search for 'temperature for cannabis vegetative' will most likely get you the temperatures you need for cannabis during day and night of the vegetative stage. To really gain some skills search for 'tips for cannabis veg' and 'how to veg cannabis' might be useful also.
The amount of light per day your plant is getting will determine what it focuses its life energy on, there are different stages of growth. You can learn all about the stages of cannabis by searching for 'stages of cannabis'. During that search, keep browsing until you can figure out the light cycles of each stage. Since you are starting with the vegetative stage, I would make this the first light cycle you want to research.
Picking a grow medium is based on what is easiest for your grow situation. You said you had high humidity so I would search for 'best grow medium high humidity cannabis'. I have never searched this myself, but I am sure it will give you some leads. If you are a busy person, I would search for things like 'low maintenance grow medium cannabis'. Keep doing searches about things you would prefer in a grow medium. I am sure some one on google's recommendations has a great mixture.
As for nutrition cycles, I would find the company's website that you have purchased your nutrients from. It sounds like Fox Farm is your nutrient line of choice, so search for 'fox farm feeding schedule' or 'fox farm nutrients'. It will have a guide to the product you are using and how much to give it each feeding based on the stage of growth you are in. Include what grow medium you are using in the search.
And above all: Stay calm and always wait an extra week if you think your ready to harvest. Good luck!