Congratulations on your first grow!
"What stage is this plant?"
This plant is in the vegetative stage. It's difficult to know how old it is because growing conditions dictate how quickly they grow. That's kind of a strange question. Did you plant it? Have you read about and do you understand the difference between vegetative and flowering growth?
"What are some natural home nutrients?"
Likely the number one "home nutrient" is compost. Garden compost, worm compost and kitchen compost are all excellent choices. The problem is, these all take time and preparation. Other choices include things like compost teas and teas brewed from other plants. Again, these take time.''
It sounds like you are on a budget. If you are concerned about staying organic, it's easy to go to the big box store, garden center, or local hardware store and find bagged organic fertilizer. For a first grow, you can probably get by with tomato fertilizer. See if you can find Espoma Tomato Tone.
@JSB99 has given you some excellent advice. People have been growing weed for thousands of years. There's no need to reinvent this process.
Growing good weed in soil is easy and yes, it is possible to do it on a low budget. But it's a long game, there are very few good shortcuts. You have to be willing to study, pop some seeds (or clone), grow them out and learn from your mistakes.