diff --git a/readme.md b/readme.md
index 0b1cb7f..2a2d507 100644
--- a/readme.md
+++ b/readme.md
@@ -8,32 +8,35 @@
 
 ## An SSB user sent you Ğ1? Here is how to claim it:
 
-First, you need to get your Duniter secret key from your SSB secret key.
+First, you need to generate your base58 Duniter secret key from your base64 SSB secret key.
 
 ```
 chmod +x secret2dunikey.sh
 ./secret2dunikey.sh
 ```
 
-Then, all you need to do is connect to a Duniter client, like [Cesium](https://cesium.app/), using the generated ~/.ssb/secret.dunikey
+Then, all you need to do is connect to a Duniter client, using the generated ~/.ssb/secret.dunikey
+
+1. Download [Cesium](https://cesium.app/)
+2. On Cesium homescreen, click "**Other methods**" and choose "**Keychain file**" : 
+3. Then, browse your filesystem to select your Duniter secret key stored in ~/.ssb/secret.dunikey :
 
 ![Cesium authentification](https://git.p2p.legal/axiom-team/ssb-g1-tip/raw/master/doc/create-account.gif)
 
-1. On Cesium homescreen, click "**Other methods**" and choose "**Keychain file**" : 
-2. Then, browse your filesystem to select your Duniter secret key stored in ~/.ssb/secret.dunikey :
-
 ## You too want to send tips?
 
-An other way to spend your Ğ1 is use it with this micro-donation system.
+A cool way to spend your Ğ1 is use it with this micro-donation system.
 
 ### Install
 
-First, you have to install the necessary tools, like Silkaj, the Duniter client:
+First, you have to install the necessary tools using the `install.sh` script.
+
 ```
 chmod +x install.sh tip.sh
 ./install.sh
 ```
-(you only have to do this once)
+
+This script installs tools like Silkaj, the command line Duniter client. Don't worry, you will only have to do this once 😉
 
 ### Usage
 
@@ -45,7 +48,7 @@ Then, once every other week, you can use the `tip.sh` script :
 
 `tip.sh` will have a look at the posts you liked and will send from your Duniter account the corresponding amount (based on the number of times you liked a post) to the appropriate recipients.
 
-It will also generate one or two markdown formatted files to help you thank publicly your fellow butts, and make them aware you sent them a tip 😉
+It will also generate one or more markdown formatted files to help you thank publicly your fellow butts, and make them aware you sent them a tip 😉
 
 ![](https://git.p2p.legal/axiom-team/ssb-g1-tip/raw/master/doc/tip.gif)
 
@@ -68,7 +71,7 @@ The economy is still in its infancy, but you can already:
 
 It is a way to design a currency so that every human, whatever the generation they are part of, produces the same relative amount of money.
 
-Unlinke the majority of currencies, where money creation is centralized (money is created by big private banks via credit), in a libre currency, money takes place everywhere.
+Unlinke the majority of currencies, where money creation is centralized (money is created by big private banks via credit), in a libre currency, money creation takes place everywhere.
 
 ![](https://git.p2p.legal/axiom-team/ssb-g1-tip/raw/master/doc/value-fields.png)
 
@@ -78,7 +81,9 @@ The Relative Theory of Money was written in 2010 by French mathematician Stephan
 
 Ğ1 the first libre currency we know of.
 
-It runs on [the Duniter blockchain engine](https://duniter.org/).
+Ğ1 has the particularity to use blockchain to secure transactions, and uses on a web of trust to identify unique users, in order to make sure each individual can produce only one **Universal Dividend** each day, and nobody is cheating by producing a disproportionate amount of money.
+
+Ğ1 runs on [the Duniter blockchain engine](https://duniter.org/).
 
 The main clients for Duniter are [Cesium](https://cesium.app/) and [Silkaj](https://mystifying-nobel-66ae54.netlify.com/)
 
diff --git a/tip.sh b/tip.sh
index 304bfc0..cb6eb13 100755
--- a/tip.sh
+++ b/tip.sh
@@ -148,7 +148,7 @@ then
 	last_ts=$(cat "$state_file") || exit 1
 else
  	# timestamp from 24h ago
-	last_ts=$((current_ts - 24*3600*1000))
+	last_ts=$((current_ts - 24*3600*1000 - 1))
 #else last_ts=null
 fi