Any resources to learn the tRPC better? Hopefully with guides and examples?

export const coinRouter = router({
  getCoin: publicProcedure
  .input(z.object({ name: z.string()}))
    .query(async ({ input }) => {
      const coin = await fetch(`https://api.coingecko.com/api/v3/coins/${input.name}?sparkline=true`).then(res =>
      res.json());
      const parsedData = coinResult.parse(coin)
      return parsedData   
    })
})

export const coinRouter = router({
  getCoin: publicProcedure
  .input(z.object({ name: z.string()}))
    .query(async ({ input }) => {
      const coin = await fetch(`https://api.coingecko.com/api/v3/coins/${input.name}?sparkline=true`).then(res =>
      res.json());
      const parsedData = coinResult.parse(coin)
      return parsedData   
    })
})