I’m new to dnd and I’m having a hard time getting what all the stats mean, one of the things I’m having the most trouble with is things like, for example, 1d20. What does this mean and how does it apply to my stats?
The term "1d20" is a short notation for "1 die with 20 sides". So when there is the notation of "roll 1d20" you are asked to roll an Icosahedron, or 20 sided die. 3d6 likewise would be 3 dice of the cube type.
It is even explained in the rules, usually very close to the beginning. Like in the d&D5 basic rules, page 3:
The game uses polyhedral dice with different numbers of sides. You can find dice like these in game stores and in many bookstores.
In these rules, the different dice are referred to by the letter d followed by the number of sides: d4, d6, d8, d10, d12, and d20. For instance, a d6 is a six-sided die (the typical cube that many games use).
1d20 is short hand for "one 20-sided die". The first number always denotes how many dice to roll. The "d" stands for "die"/"dice". The second number always denotes how many sides the dice has. Before getting into the nitty gritty of character creation, I recommend reading through all of the introductory information provided at the beginning of your book. It isn't as fun, but it is crucial to a proper understanding of the game and the components thereof.
The term "1d20" is a short notation for "1 die with 20 sides each".
Polyhedral = a solid shape with four or more flat surfaces with D meaning die or dice - a d6 is a six-sided die (the typical cube that many games, (Monopoly, Risk, Clue) use).
The standard set : 1D4, 1D6, 1D8, 2D10, 1D12, and 1D20.I have 3 of each die plus a D30, a true D100 and I hope to buy a D60, D120 & a D1 ( a mobius strip design)in the future.