diff --git a/bitcoin-information/buying-earning.html b/bitcoin-information/buying-earning.html
index 7340373e..cd5aab7d 100644
--- a/bitcoin-information/buying-earning.html
+++ b/bitcoin-information/buying-earning.html
@@ -152,7 +152,6 @@ <h2 id="earning"><a href="#earning">Earning Bitcoins:</a></h2>
             <li><a href="https://fountain.fm/" title="Fountain" target="_blank" rel="noopener">Fountain</a> (listen to podcasts)</li>
             <li><a href="https://www.reddit.com/r/Jobs4Bitcoins/" title="Jobs" target="_blank" rel="noopener">Job Postings</a></li>
             <li><a href="https://addslice.com/" title="Slice" target="_blank" rel="noopener">Slice</a></li>
-            <li><a href="https://workingforbitcoins.com" title="Working" target="_blank" rel="noopener">Working for Bitcoins</a></li>
           </ul>
           <h2 id="escrow"><a href="#escrow">Escrow Services:</a></h2>
           <ul>
diff --git a/bitcoin-information/online-offline-classes.html b/bitcoin-information/online-offline-classes.html
index b5a8ceb3..c4661a9c 100644
--- a/bitcoin-information/online-offline-classes.html
+++ b/bitcoin-information/online-offline-classes.html
@@ -125,7 +125,7 @@ <h2 id="technical"><a href="#technical">Technical Online Classes:</a></h2>
             <li><a href="https://www.bitscript.app/lessons" title="Bitscript" target="_blank" rel="noopener">Bitcoin Script Lessons</a></li>
             <li><a href="https://github.com/chaincodelabs/bitcoin-curriculum" title="Chaincode Labs Intro" target="_blank" rel="noopener">Bitcoin Protocol Development Curriculum</a> (Chaincode Labs)</li>
             <li><a href="https://blockchain.studentorg.berkeley.edu/education" title="Blockchain at Berkeley" target="_blank" rel="noopener">Blockchain at Berkeley</a></li>
-            <li><a href="https://learning.chaincode.com/" title="Chaincode Seminars" target="_blank" rel="noopener">Chaincode Online Seminars</a></li>
+            <li><a href="https://chaincode.gitbook.io/seminars" title="Chaincode Seminars" target="_blank" rel="noopener">Chaincode Online Seminars</a></li>
             <li><a href="https://www.coursera.org/learn/cryptocurrency" title="Coursera" target="_blank" rel="noopener">Coursera Cryptocurrency Course</a> (61 videos in 11 sections)</li>
             <li><a href="https://www.unic.ac.cy/blockchain/free-mooc/" title="University of Nicosia" target="_blank" rel="noopener">Introduction to Digital Currency</a> - MOOC offered by University of Nicosia</li>
             <li><a href="https://www.khanacademy.org/economics-finance-domain/core-finance/money-and-banking/bitcoin/v/bitcoin-what-is-it" title="Khan Academy" target="_blank" rel="noopener">Khan Academy Bitcoin Course</a> (9 ~10 minute videos)</li>
@@ -133,7 +133,6 @@ <h2 id="technical"><a href="#technical">Technical Online Classes:</a></h2>
             <li><a href="https://mooniversity.io/" title="Mooniversity" target="_blank" rel="noopener">Mooniversity</a></li>
             <li><a href="https://plebdevs-website-plebs.vercel.app/" title="PlebDevs" target="_blank" rel="noopener">PlebDevs</a></li>
             <li><a href="https://www.udemy.com/user/car-gonzalez/" title="Pleb Lab" target="_blank" rel="noopener">Pleb Lab</a></li>
-            <li><a href="https://chaincode.applytojob.com/apply/pEFCOAcb0l/Rust-For-Bitcoiners" title="Rust for Bitcoiners" target="_blank" rel="noopener">Rust for Bitcoiners</a></li>
             <li><a href="https://supertestnet.org/workshops.html" title="SuperTestnet Workshops" target="_blank" rel="noopener">SuperTestnet Workshops</a></li>
             <li><a href="https://www.udemy.com/bitcoin-or-how-i-learned-to-stop-worrying-and-love-crypto/" title="Udemy" target="_blank" rel="noopener">Udemy Course</a> (over 8 hours of video tutorials)</li>
           </ul>