diff --git a/docs/contributing.md b/docs/contributing.md
index ea83b4b3..9caa2075 100644
--- a/docs/contributing.md
+++ b/docs/contributing.md
@@ -30,7 +30,7 @@ It **does not** cover onchain protocols/dapps, layer 2s/rollups or any other too
The wiki is supposed to cover all important parts of Ethereum core protocol and its development. The protocol architecture and related topics is reflected in the wiki format. The whole wiki lives under `/docs/wiki` and the [sidebar](_sidebar.md) defines the main documentation structure. High level areas are abstracted to directories which include all subtopics.
-For contributors, we recommend focusing on specific topics contained in corresponding documents. It's best to own a single topic and work out all the details. Create a new document and add the topic to the sidebar if it's not there yet. Join the [discord server](https://discord.gg/HnCjCvCN), let others know what you are working on in the group channel and collaborate with other contributors writing about related topics. If you are working with multiple people on a significant piece of content, you can have a dedicated branch in the repo for easier coordination.
+For contributors, we recommend focusing on specific topics contained in corresponding documents. It's best to own a single topic and work out all the details. Create a new document and add the topic to the sidebar if it's not there yet. Join the [discord server](https://discord.gg/epfsg), let others know what you are working on in the group channel and collaborate with other contributors writing about related topics. If you are working with multiple people on a significant piece of content, you can have a dedicated branch in the repo for easier coordination.
## Editing wiki
diff --git a/docs/eps/intro.md b/docs/eps/intro.md
index 27225f2f..54e1ae24 100644
--- a/docs/eps/intro.md
+++ b/docs/eps/intro.md
@@ -34,7 +34,7 @@ The second part of the program offers two distinct tracks focused on development
The first instance of EPF study group is starting in February 2024. It's completely open and permissionless, and it is up to each participant as to how they want to approach it. Whether you want to learn as much as possible, focus only on certain topics or share your knowledge with others, you are welcomed. Although it's opened, [you can register](https://forms.gle/7TqmryC217EPwgqr9) to help us tailor the experience better.
-> Join our community [Discord server](https://discord.gg/HnCjCvCN)
+> Join our community [Discord server](https://discord.gg/epfsg)
Study group participants will collaboratively develop a comprehensive wiki, serving as an evolving knowledge base for current and future core developers. This will provide students with practical experience in contributing to open source resources, while gaining invaluable experience in documentation and community-driven development.
@@ -42,7 +42,7 @@ While this program is designed to act as a precursor to the Ethereum Protocol Fe
## Important links
-- Discord server: https://discord.gg/dqNM9zN5
+- Discord server: https://discord.gg/epfsg
- Weekly calls: https://meet.ethquokkaops.io/EPFsg
- Sessions calendar: https://calendar.google.com/calendar/u/0?cid=ZXBmc3R1ZHlncm91cEBnbWFpbC5jb20 ([ics format](https://calendar.google.com/calendar/ical/epfstudygroup%40gmail.com/public/basic.ics))
diff --git a/docs/eps/week0.md b/docs/eps/week0.md
index 4c695faa..49d27141 100644
--- a/docs/eps/week0.md
+++ b/docs/eps/week0.md
@@ -8,6 +8,9 @@ First, please check out the [announcement blog post](https://blog.ethereum.org/2
The call discussed the program details, schedule and answer your questions. Recording can be found at https://streameth.org/watch?event=epf_study_group&session=65cf9aaa4097e3a08efd1a28.
+[recording](https://streameth.org/embed/?playbackId=2cb7oln7ky57em6a&streamId=&playerName=EPF+Study+Group ':include :type=iframe width=100% height=520 frameborder="0" allow="fullscreen" allowfullscreen')
+
+
## Pre-reading
Before the program, you should be familiar with some general concepts from Ethereum and computer science. If you are not familiar with basics of using Ethereum or have non experience with software development, we recommend gaining at least some understanding of following:
diff --git a/docs/eps/week1.md b/docs/eps/week1.md
index 41872554..698fec8a 100644
--- a/docs/eps/week1.md
+++ b/docs/eps/week1.md
@@ -2,7 +2,7 @@
The first week of the study group is dedicated to a general introduction to the protocol and R&D ecosystem.
-Come to see the presentation by Mário Havel on [Monday, February 19, 4PM UTC](https://savvytime.com/converter/utc-to-germany-berlin-united-kingdom-london-ny-new-york-city-ca-san-francisco-china-shanghai-japan-tokyo-australia-sydney/feb-12-2024/4pm). Join the call at this time at https://meet.ethquokkaops.io/EPFsg. The recording will be shared here.
+Come to see the presentation by Mário Havel on [Thursday, February 22, 7AM UTC](https://savvytime.com/converter/utc-to-germany-berlin-united-kingdom-london-ny-new-york-city-ca-san-francisco-china-shanghai-japan-tokyo-australia-sydney/feb-22-2024/7am). *This talk will be conducted again in the same format as before*. We encourage you to join the talk if you haven't seen it already on Monday or if you are in easter time zones. The link to stream will be provided here and in [Discord group](https://discord.gg/epfsg).
## Pre-reading
@@ -57,6 +57,8 @@ The current research and development is summarized by the [roadmap](https://twit
> Simplified overview of the current Ethereum design can be found documentation on [node architecture](https://ethereum.org/developers/docs/nodes-and-clients/node-architecture) and in the week 1 presentation
+As hinted above, the main high level components of Ethereum are execution and consensus layer. These are 2 networks which are connected and dependent on each other. Execution layer provides the execution engine, handles user transaction and all state (address, contract data) while consensus implements the proof-of-stake mechanism ensuring security and [fault tolerance](https://inevitableeth.com/home/concepts/bft).
+
## Implementations and Development
Everything mentioned above - the ideas, design and specifications comes down to the actual application here, in its implementation. An implementation of the execution layer (EL) or consensus layer (CL) is called a *client*. A computer running this client and connecting to the network is called a *node*. A node is therefore a pair of EL and CL clients actively participating in the network.
diff --git a/docs/index.html b/docs/index.html
index dd7fc18d..6391afe5 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -23,14 +23,14 @@
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diff --git a/docs/readme.md b/docs/readme.md
index 6c38fec3..b1ea3b68 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -10,7 +10,7 @@ The protocol wiki is a collection of technical resources about the Ethereum prot
Ethereum Protocol Fellowship Study Group (EPSsg) is an open study program for anyone interested in learning about internals of the protocol.
-Learn more about EPS in its [announcement blog](https://blog.ethereum.org/2024/02/07/epf-study-group). Join the community in our [Discord server](https://discord.gg/HnCjCvCN).
+Learn more about EPS in its [announcement blog](https://blog.ethereum.org/2024/02/07/epf-study-group). Join the community in our [Discord server](https://discord.gg/epfsg).
## Contributing
diff --git a/docs/week1.pdf b/docs/week1.pdf
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