What's happening
The Sun's ingress into Taurus happens when its ecliptic longitude crosses from 30° Aries into 0° Taurus, about a month after the vernal equinox. In the northern hemisphere it falls in the middle of the ascending half of spring; in the south it marks the settling into autumn.
The Sun stays in each sign for roughly thirty to thirty-one days. In Taurus, it is moving through the second segment of the tropical zodiac — the first fixed sign of the year.
The tradition
Taurus is a fixed earth sign, ruled by Venus. Where Aries began, Taurus consolidates; where Aries was pure impulse, Taurus is the body receiving that impulse and giving it form. The tradition associates Taurus with the senses, with possession in the deepest meaning of the word, with food, music, money, touch, and the pleasures that reward patience.
Venus's rulership gives the month an aesthetic register that Aries does not have. Taurus season is when the edges of spring become the substance of it — the garden, not the plan for the garden; the meal, not the recipe.
How to work with it
Let things take their time. Taurus does not reward hurry, and the work most worth doing in this month is the work that asks your attention to stay in a single place long enough for the place to reveal itself. Cook something slow. Finish the project you would otherwise abandon at 80%. Put money somewhere it can grow without being watched.
The shadow is stubbornness pretending to be stability — refusing to move because moving is work. Taurus's gift is steadiness, not inertia; the distinction shows up in whether the body you are building is still alive.
The simple rule
Ask what would feel good to keep, not just to have. The Sun in Taurus rewards the pleasures that last past the first bite.