diff --git a/.gitignore b/.gitignore
index 74c82d3..112ab68 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 node_modules
 generated
-build
\ No newline at end of file
+build
+.git
+.gitignore
+.vscode
\ No newline at end of file
diff --git a/README.md b/README.md
index 221c1e8..2d53eef 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 ## Slides
 
 [![Top Slide](./slide1.png)](https://docs.google.com/presentation/d/1-jZd4Sp83YW6r2KhXYeU4sOlKdcmp0LVi3WF1VAkxzk/edit?usp=sharing)
+[![Top Slide](./slide1how3marcus.png)](https://docs.google.com/presentation/d/1MMgXx_GrufU_o0JdFhEmqpxRKAFyMAxSdYyGO-9kfnU/edit?usp=sharing)
 
 ## Cheatsheet
 
@@ -10,35 +11,37 @@
 
 ## Good subgraphs:
 
-- [Messari Subgraphs](https://subgraphs.messari.io)
-- [EIP-721 (NFTS on The Graph Network)](https://thegraph.com/explorer/subgraph?id=AVZ1dGwmRGKsbDAbwvxNmXzeEkD48voB3LfGqj5w7FUS&view=Overview)
-- [Lens Protocol](https://thegraph.com/hosted-service/subgraph/anudit/lens-protocol)
-- [Unlock Protocol on The Graph Network](https://thegraph.com/explorer/subgraph?id=8u7KcVRxjtTDRgEJup3UuPJk6YoRDTHNpSMk5BEpdw42&view=Overview)
-- [Open Sea Subgraph](https://thegraph.com/hosted-service/subgraph/protofire/opensea-wyvern-exchange-subgraph)
-- [LiNEAR](https://thegraph.com/hosted-service/subgraph/linear-protocol/linear)
-- [Aave Gotchi](https://thegraph.com/hosted-service/subgraph/aavegotchi/aavegotchi-core-matic)
-- [Tellor](https://thegraph.com/hosted-service/subgraph/tellor-io/tellorxoraclemainhgraph)
-- [Live Peer](https://thegraph.com/hosted-service/subgraph/livepeer/arbitrum-one)
-- [ENS](https://thegraph.com/hosted-service/subgraph/ensdomains/ens)
-- [UMA on The Graph Network](https://thegraph.com/explorer/subgraph?id=41LCrgtCNBQyDiVVyZEuPxbvkBH9BxxLU3nEZst77V8o&view=Overview)
+-   [Messari Subgraphs](https://subgraphs.messari.io)
+-   [EIP-721 (NFTS on The Graph Network)](https://thegraph.com/explorer/subgraph?id=AVZ1dGwmRGKsbDAbwvxNmXzeEkD48voB3LfGqj5w7FUS&view=Overview)
+-   [Lens Protocol](https://thegraph.com/hosted-service/subgraph/anudit/lens-protocol)
+-   [Unlock Protocol on The Graph Network](https://thegraph.com/explorer/subgraph?id=8u7KcVRxjtTDRgEJup3UuPJk6YoRDTHNpSMk5BEpdw42&view=Overview)
+-   [Open Sea Subgraph](https://thegraph.com/hosted-service/subgraph/protofire/opensea-wyvern-exchange-subgraph)
+-   [LiNEAR](https://thegraph.com/hosted-service/subgraph/linear-protocol/linear)
+-   [Aave Gotchi](https://thegraph.com/hosted-service/subgraph/aavegotchi/aavegotchi-core-matic)
+-   [Tellor](https://thegraph.com/hosted-service/subgraph/tellor-io/tellorxoraclemainhgraph)
+-   [Live Peer](https://thegraph.com/hosted-service/subgraph/livepeer/arbitrum-one)
+-   [ENS](https://thegraph.com/hosted-service/subgraph/ensdomains/ens)
+-   [UMA on The Graph Network](https://thegraph.com/explorer/subgraph?id=41LCrgtCNBQyDiVVyZEuPxbvkBH9BxxLU3nEZst77V8o&view=Overview)
 
 ## Info
 
-- [Contract to index](https://etherscan.io/address/0xc2c747e0f7004f9e8817db2ca4997657a7746928)
-- [Google Slides for NFT Subgraph Development Workshop](https://docs.google.com/presentation/d/1-jZd4Sp83YW6r2KhXYeU4sOlKdcmp0LVi3WF1VAkxzk/edit?usp=sharing)
-- Questions: **[twitter.com/schmid_si](https://twitter.com/schmid_si)**
+-   [Contract to index](https://etherscan.io/address/0xc2c747e0f7004f9e8817db2ca4997657a7746928)
+-   [Google Slides for NFT Subgraph Development Workshop](https://docs.google.com/presentation/d/1-jZd4Sp83YW6r2KhXYeU4sOlKdcmp0LVi3WF1VAkxzk/edit?usp=sharing)
+-   Questions:
+    -   **[twitter.com/schmid_si](https://twitter.com/schmid_si)**
+    -   **[twitter.com/Marcus_Rein\_](https://twitter.com/Marcus_Rein_)**
 
 ## Prerequisites
 
-- Install graph-cli: `yarn global add @graphprotocol/graph-cli`
+-   Install graph-cli: `yarn global add @graphprotocol/graph-cli`
 
 ## First Steps
 
-- [Find the contract on Etherscan](https://etherscan.io/address/0xc2c747e0f7004f9e8817db2ca4997657a7746928)
-- [Find the contract creation transaction for startBlock](https://etherscan.io/tx/0xe9e60dc12e1a7bc545aa497bc494f5f54ce81da06de4f6fef50459816218e66b)
-- Download the ABI
+-   [Find the contract on Etherscan](https://etherscan.io/address/0xc2c747e0f7004f9e8817db2ca4997657a7746928)
+-   [Find the contract creation transaction for startBlock](https://etherscan.io/tx/0xe9e60dc12e1a7bc545aa497bc494f5f54ce81da06de4f6fef50459816218e66b)
+-   Download the ABI
 
-- Run this command to initialise the subgraph with events:
+-   Run this command to initialise the subgraph with events:
 
 ```bash
 graph init \
@@ -51,8 +54,8 @@ graph init \
     hashmasks hashmasks-subgraph
 ```
 
-- Inspect the source
-- Change startblock:
+-   Inspect the source
+-   Change startblock:
 
 ```
 source:
@@ -63,18 +66,18 @@ source:
 
 – Create new subgraph on [Subgraph Studio](https://thegraph.com/studio/) named "Hashmasks"
 
-- `graph auth --studio ...`
-- `yarn deploy`
+-   `graph auth --studio ...`
+-   `yarn deploy`
 
 ## Remove unused Entities and Events
 
 ```graphql
 # schema.graphql
 type Transfer @entity {
-  id: ID!
-  from: Bytes! # address
-  to: Bytes! # address
-  tokenId: BigInt! # uint256
+	id: ID!
+	from: Bytes! # address
+	to: Bytes! # address
+	tokenId: BigInt! # uint256
 }
 ```
 
@@ -84,12 +87,12 @@ Make them immutable for performance improvements
 
 ```graphql
 type Transfer @entity(immutable: true) {
-  id: ID!
-  from: Bytes! # address
-  to: Bytes! # address
-  tokenId: BigInt! # uint256
-  timestamp: BigInt!
-  blockNumber: BigInt!
+	id: ID!
+	from: Bytes! # address
+	to: Bytes! # address
+	tokenId: BigInt! # uint256
+	timestamp: BigInt!
+	blockNumber: BigInt!
 }
 ```
 
@@ -97,65 +100,65 @@ Use `event.transaction.hash.toHex() + "-" + event.logIndex.toString()` as the id
 
 ```typescript
 export function handleTransfer(event: TransferEvent): void {
-  let entity = new Transfer(
-    event.transaction.hash.toHex() + "-" + event.logIndex.toString()
-  );
-  entity.blockNumber = event.block.number;
-  entity.timestamp = event.block.timestamp;
-  entity.from = event.params.from;
-  entity.to = event.params.to;
-  entity.tokenId = event.params.tokenId;
-  entity.save();
+	let entity = new Transfer(
+		event.transaction.hash.toHex() + "-" + event.logIndex.toString()
+	);
+	entity.blockNumber = event.block.number;
+	entity.timestamp = event.block.timestamp;
+	entity.from = event.params.from;
+	entity.to = event.params.to;
+	entity.tokenId = event.params.tokenId;
+	entity.save();
 }
 ```
 
 ### Store logical entities
 
-- Identify the important entities: Token, Owner, Contract
-- Link them
+-   Identify the important entities: Token, Owner, Contract
+-   Link them
 
 ```graphql
 type Transfer @entity(immutable: true) {
-  id: ID!
-  from: Owner!
-  to: Owner!
-  token: Token!
-  timestamp: BigInt!
-  blockNumber: BigInt!
+	id: ID!
+	from: Owner!
+	to: Owner!
+	token: Token!
+	timestamp: BigInt!
+	blockNumber: BigInt!
 }
 
 type Token @entity {
-  id: ID!
-  owner: Owner
-  uri: String
-  transfers: [Transfer!]! @derivedFrom(field: "token")
-  contract: Contract
+	id: ID!
+	owner: Owner
+	uri: String
+	transfers: [Transfer!]! @derivedFrom(field: "token")
+	contract: Contract
 }
 
 type Owner @entity {
-  id: Bytes! # Use bytes as ID
-  ownedTokens: [Token!]! @derivedFrom(field: "owner")
-  balance: BigInt
+	id: Bytes! # Use bytes as ID
+	ownedTokens: [Token!]! @derivedFrom(field: "owner")
+	balance: BigInt
 }
 
 type Contract @entity {
-  id: ID!
-  name: String
-  symbol: String
-  totalSupply: BigInt
-  mintedTokens: [Token!]! @derivedFrom(field: "contract")
+	id: ID!
+	name: String
+	symbol: String
+	totalSupply: BigInt
+	mintedTokens: [Token!]! @derivedFrom(field: "contract")
 }
 ```
 
 ## Other resources
 
-- https://github.com/schmidsi/hackathon-starterkit
-- https://github.com/scaffold-eth/scaffold-eth#-scaffold-eth
-- https://soulbound.xyz
-- https://github.com/Developer-DAO/resources
-- https://dev.to/dabit3/the-complete-guide-to-full-stack-ethereum-development-3j13
-- https://github.com/itsjerryokolo/CryptoPunks
-- https://github.com/dabit3/building-a-subgraph-workshop
-- https://thegraph.com/docs/developer/quick-start
-- https://thegraph.com/discord
-- https://protean-labs.github.io/subgrounds/
+-   https://github.com/schmidsi/hackathon-starterkit
+-   https://github.com/scaffold-eth/scaffold-eth#-scaffold-eth
+-   https://soulbound.xyz
+-   https://github.com/Developer-DAO/resources
+-   https://dev.to/dabit3/the-complete-guide-to-full-stack-ethereum-development-3j13
+-   https://github.com/itsjerryokolo/CryptoPunks
+-   https://github.com/dabit3/building-a-subgraph-workshop
+-   https://thegraph.com/docs/developer/quick-start
+-   https://thegraph.com/discord
+-   https://protean-labs.github.io/subgrounds/
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