diff --git a/networks/mainnet/rpcs.md b/networks/mainnet/rpcs.md
index 0e5c939b4..90a9a3370 100644
--- a/networks/mainnet/rpcs.md
+++ b/networks/mainnet/rpcs.md
@@ -6,9 +6,9 @@ description: Public RPC endpoints are available for the Filecoin mainnet.
 
 [Chainlist](https://chainlist.org/?search=filecoin&testnets=true) provides a dynamically updated list of [available Filecoin - Mainnet RPCs](https://chainlist.org/?search=filecoin&testnets=false).
 
-These endpoints are limited to [read-only Filecoin JSON RPC API calls](../../reference/json-rpc/) including [Filecoin Eth RPC methods](../../reference/json-rpc/eth.d).  The only write operation are [`MPoolPush`](../../reference/json-rpc/mpool.md#mpoolpush) and [`EthSendRawTransaction`](../../reference/json-rpc/eth.md#ethsendrawtransaction)for sending already signed messages.
+These endpoints are limited to the read-only [Filecoin JSON RPC API](../../reference/json-rpc/) including read-only [Filecoin Eth RPC](../../reference/json-rpc/eth.md) methods, except for the write operations [`MPoolPush`](../../reference/json-rpc/mpool.md#mpoolpush) and [`EthSendRawTransaction`](../../reference/json-rpc/eth.md#ethsendrawtransaction) for sending already signed messages.
 
-{% hint style="info" %} Please note that most publicly hosted endpoints **only guarantee recent state, i.e. 2000 of the latest blocks (last 16.67 hours).** To request an archival node you can contact a provider below. {% endhint %}
+{% hint style="info" %} Please note that most publicly hosted endpoints <strong>only guarantee recent state, i.e. 2000 of the latest blocks (last 16.67 hours).</strong> To request an archival node you can contact a provider below. {% endhint %}
 
 
 <table>
diff --git a/smart-contracts/fundamentals/README.md b/smart-contracts/fundamentals/README.md
index f0684c945..71c21faa1 100644
--- a/smart-contracts/fundamentals/README.md
+++ b/smart-contracts/fundamentals/README.md
@@ -44,9 +44,9 @@ Let’s get building. Choose one of the following APIs. These are all storage he
 
 Examples:
 
-* [Polygon tutorial](https://nftschool.dev/tutorial/mint-nftstorage-polygon/) on NFTschool.dev
-* [Flow tutorial](https://nftschool.dev/tutorial/flow-nft-marketplace/) on NFTschool.dev
-* [Avalanche tutorial](https://nftschool.dev/tutorial/avax-nft/) on NFTschool.dev
+* [Polygon tutorial](https://github.com/protocol/nft-website/blob/main/docs/tutorial/mint-nftstorage-polygon.md)
+* [Flow tutorial](https://github.com/protocol/nft-website/blob/main/docs/tutorial/flow-nft-marketplace.md) 
+* [Avalanche tutorial](https://github.com/protocol/nft-website/blob/main/docs/tutorial/avax-nft.md) 
 * [Using IPFS & Filecoin on Harmony](https://docs.harmony.one/home/developers/tutorials/ipfs-filecoin)
 
 ## Additional resources
diff --git a/storage-providers/filecoin-deals/filecoin-programs.md b/storage-providers/filecoin-deals/filecoin-programs.md
index 809481e41..45bb1bbdb 100644
--- a/storage-providers/filecoin-deals/filecoin-programs.md
+++ b/storage-providers/filecoin-deals/filecoin-programs.md
@@ -69,7 +69,7 @@ Swan is a provider of cross-chain cloud computing solutions. Developers can use
 
 Swan Cloud provides decentralized cloud computing solutions for Web3 projects by integrating storage, computing, and payment into one suite.
 
-### [Open Panda](https://openpanda.io/)
+### [Open Panda](https://github.com/data-preservation-programs/open-panda)
 
 Open Panda was a platform for data researchers, analysts, students, and enthusiasts to interact with the largest open datasets in the world. Data available through the platform was stored on Filecoin, a decentralized storage network comprised of thousands of independent Storage Providers around the world.
 
diff --git a/storage-providers/filecoin-economics/fil-collateral.md b/storage-providers/filecoin-economics/fil-collateral.md
index e40c07744..b2a6daa59 100644
--- a/storage-providers/filecoin-economics/fil-collateral.md
+++ b/storage-providers/filecoin-economics/fil-collateral.md
@@ -38,7 +38,7 @@ The “Current Sector Initial Pledge" can be found on blockchain explorers like
 
 Another cost factor in the network is gas. Storage providers not only pledge collateral for the capacity they announce on-chain. The network also burns FIL in the form of gas fees. Most activity on-chain has some level of gas involved. For storage providers, this is the case for committing sectors.
 
-The gas fees fluctuate over time and can be followed on various websites like [FGas](https://fgas.io/).
+The gas fees fluctuate over time and can be followed on various websites like [Filfox - Gas Statistics](https://filfox.info/en/stats/gas) and [Beryx - Gas Estimator](https://beryx.io/estimate_gas).
 
 ## FIL lending programs