Go to the hydro shop, the specialize in their products, but yeah start with some soil plants, ocean forrest is good and I hear the
Fox Farm nutrient has a 3-part formula and is very easy to understand and use.
Climate is a very big issue, ensuring circulation, ventilation, adequate room temperatures, pest control, light distance from plants not too far not too close, humidity, 80% clones, 60% veg, 40% flowering, you will learn as you go along.
Starting small is best, 1 light a few plants and some ventiliation in and out fans, circulating fans, and you could get away with a decent amount.
also nutrients are key, don't add too much as you can burn your plants, and not enough and they will be too hungry.
Good luck!