Like you and me, plants want to live. Their basic requirements are slightly different than ours:
Plants get their energy from the sun and their nutrients from the soil. Water is needed to transport the nutrients throughout, ie. stem, branches, leaves and more.
There are nearly 400,000 different varieties of plants, so there are few absolutes. That said, for most veggies and fruit, the more the sun the better. Soil that's not too clay-ey, or sandy. And roots that get water regularly, but not standing in water.
The best way to learn is through research, yes, but, also, by doing. Start with easy, e.g. mint and herbs, and without overcommitting (or spending too much).
One of our favorite places is the Kilbourn Park Organic Greenhouse (part of The Chicago Park District) and their plant sale May 11-12, 2024 supports their summer kids programming.
A tree is a plant with a trunk.
How to plant a bare root tree.
Basics
Soak tree roots in water for 1 to 2 hours. Do not leave in water longer.
Choose location - as much sun as possible, with room to grow.
Make planting hole or slit large and deep enough so that main roots may spread out.
Mulch around base w/ organic matter after (to reduces competition & retain moisture)
And water. Especially when we go long periods without rain. :)
For more, check out article by Arbor Day
Or an article by Better Homes and Garden.
Or videos by TN Tree Day or by Arbor Day.