NEED ADVICE ON USING ARDUINO

Hello, I am doing a school project that requires the use of Arduino. My project is to make an automatic watering system for a greenhouse that also includes a button that would allow water to flow when the button is pushed. The plan is to have one AND gate and one OR gate on the Arduino. The AND gate will have four inputs: time, temperature, humidity and moisture and the OR gate will be the button. Could anyone help me figure out where to start on this project? (including what to buy, resources for programming etc.) Thank you in advance!

There are dozens of Threads on the Forum about watering systems. Do some searching.

...R

The AND gate will have four inputs: time, temperature, humidity

AND gates are logic circuits. I don't think you mean to use this term. It is a specialized term for digital logic signals, it is not what you want to do.

It is important you use the same words with the same meaning as everyone else so that you can understand advice.

I suspect you mean that when four conditions of four parameters reach or exceed some predefined value, something will happen.

Where to start

Seriously. Write down how you would do it given only the resources available. It doesn't have to be in computerese, just describe the process your own way. This helps organize your thoughts. You don't even need to know the various sensors in detail. At this point just something like, 'does humidity say it's time to water?' is good enough. Get an outline first and you can flesh in the details as you go.

A programming resource: Arduino IDE

Some people find a flowchart helps.

No need to respond to this thread for a few days because the OP is enjoying a brief forum timeout, and the school district of Pittsburgh is receiving an abuse report.