Recording of a live presentation done by Brooks Boyd (@midnight426) for the Madison Blockchain meetup, giving an introduction to interacting with Ethereum Smart Contracts. Slides for this presentation can be found at https://drive.google.com/open?id=1jeY3jaJgIaU9ln9wJ24RXGcHf2hUcqTlKbPmQiL8PoY
Brooks has also written a guide to Ethereum Smart Contracts, and this presentation mainly covers topics covered in the second part of that three-part guide. The first part of the written guide goes over a basic introduction to Ethereum, how to get a wallet, and purchase your first Ether. This presentation jumps in at the second part (which you can read at https://steemit.com/ethereum/@midnight426/ethereum-beginners-guide-2-smart-contracts), which goes over the basic concepts of interacting with smart contracts, including how to find smart contracts on the blockchain, verify ownership, do some basic code analysis of the contract logic, and how to create transactions that trigger smart contract functionality.