diff --git a/packages/client/README.md b/packages/client/README.md
index b1da2a32..43b9ffd2 100644
--- a/packages/client/README.md
+++ b/packages/client/README.md
@@ -72,12 +72,10 @@ console.log(client.getAccessTokenEndpoint()); // https://auth.research.identipro
 
 The OID4VCI Server metadata contains information about token endpoints, credential endpoints, as well as additional
 information about supported Credentials, and their cryptographic suites and formats.
-The code above already retrieved the metadata, so it will not be fetched again. If you however not used
+The code above already retrieved the metadata, so it will not be fetched again, and this method places the data in another variable. If you however have not used
 the `retrieveServerMetadata` option, you can use this method to fetch it from the Issuer:
 
 ```typescript
-import { OpenID4VCIClient } from '@sphereon/oid4vci-client';
-
 const metadata = await client.retrieveServerMetadata();
 ```
 
@@ -111,6 +109,8 @@ the [Proof of Posession](#proof-of-possession) chapter for more information.
 The Proof of Possession using a signature callback function. The example uses the `jose` library.
 
 ```typescript
+import * as jose from 'jose';
+
 const { privateKey, publicKey } = await jose.generateKeyPair('ES256');
 
 // Must be JWS
@@ -121,7 +121,7 @@ async function signCallback(args: Jwt, kid: string): Promise<string> {
     .setIssuer(kid)
     .setAudience(args.payload.aud)
     .setExpirationTime('2h')
-    .sign(keypair.privateKey);
+    .sign(privateKey);
 }
 
 const callbacks: ProofOfPossessionCallbacks = {
@@ -133,14 +133,14 @@ Now it is time to get the actual credential
 
 ```typescript
 const credentialResponse = await client.acquireCredentials({
-  credentialType: 'OpenBadgeCredential',
+  credentialTypes: 'OpenBadgeCredential',
   proofCallbacks: callbacks,
-  format: 'jwt_vc',
+  format: 'jwt_vc_json',
   alg: Alg.ES256K,
   kid: 'did:example:ebfeb1f712ebc6f1c276e12ec21#keys-1',
 });
 console.log(credentialResponse.credential);
-// JWT format. (LDP/JSON-LD is also supported by the client)
+// JWT format. (LDP / JSON-LD ('ldp_vc' / 'jwt_vc_json-ld') is also supported by the client)
 // eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.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.z5vgMTK1nfizNCg5N-niCOL3WUIAL7nXy-nGhDZYO_-PNGeE-0djCpWAMH8fD8eWSID5PfkPBYkx_dfLJnQ7NA
 ```