Coins is the suit of things that take time, and its numbered cards read differently from the others because of it.
Where Wands describe impulse and Swords describe thought, both of which can change in an afternoon, Coins describe conditions, employment, health, housing, savings, skills, which move on a longer clock. The practical consequence for reading is one of timing. A spread dominated by Coins is usually describing a situation measured in months, and advice to act decisively often misreads it.
The suit is also the one where the Rider-Waite-Smith deck is most humane. Smith's numbered coin cards contain more ordinary working life than any other suit: a stonemason at a bench, a labourer resting against a hedge, a beggar passing a lit window, a gardener leaning on a staff. Whatever else the deck is, this suit is a record of what work looked like to an artist in 1909.
The occult layer supplies the element earth and the sephirothic ladder from Kether to Malkuth, and Coins, sitting at the material end of everything, tends to get the least interesting treatment in esoteric commentaries. That is a fair reflection of the tradition's priorities and not of the suit's usefulness.
The one caution worth repeating is against reading the suit moralistically. Material cards are not lesser cards, and a querent asking about rent is not asking a shallower question than a querent asking about destiny. In most cases they are asking a more urgent one, and the deck has fourteen cards devoted to it for a reason.