From 2d5254393233730b14d4230faeac6db191738120 Mon Sep 17 00:00:00 2001
From: Anton <anton@picapica>
Date: Tue, 14 Apr 2015 03:28:53 +0400
Subject: added pica-client tutorial

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diff --git a/doc/pica-client-tutorial/gettingstarted.html b/doc/pica-client-tutorial/gettingstarted.html
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+ 
+<html>
+<head>
+<title>Pica Pica Messenger. Getting Started.</title>
+</head>
+<body>
+<h2>Pica Pica Messenger. Getting Started.</h2>
+<p>
+This illustrated tutorial will introduce you to Pica Pica Messenger (or pica-client), client software for distributed decentralised instant messaging 
+system. The main goal of Pica Pica project is to maintain privacy of your communications by using strong end-to-end encryption based
+on modern cryptographical standards and protocols.
+</p>
+<h3>First start. Creating account.</h3>
+<p>
+When you start pica-client for the first time, you'll have to create your new account.
+</p>
+<img src="pic1.png" align=center>
+<p>
+Click "Create New Account..." button. Let's say you want to use <b>Anonymous</b> as your nickname. Type it in the "Name:" field.
+It is recommended to set checkbox "Set passphrase for the secret key", in this case private key associated with your account is
+encrypted by passphrase and you have to enter it on each login (term "passphrase" is often used in cryptographic applications instead
+of "password"). Click "Create" button and wait a little until public/private
+ key pair and certificate that represents your account are generated.
+</p>
+<img src="pic2.png" align=center>
+<p>
+Pica Pica users are uniquely identified by their ID which is a SHA224 hash function of their certificate. Your ID will be displayed
+after certificate generation, and then you can copy it and send to friends, put on your website, print on business cards, etc. ID can
+be viewed any time later by clicking menu item "Account -> Show My Pica Pica ID". Pica Pica IDs need to have such cryptic looking like 
+<b>wYI8zxNi4XEcMCwi7BRdgOpwgiX+5e1mj6Xr1A==</b> due to decentralised nature of the system.
+</p>
+<img src="pic3.png" align=center>
+<p>
+So you have successfully created your Pica Pica account. It's time to start using it. Click "OK" in the dialog box above and you'll see
+initial window, but now drop-down list contains your newly created account and "Log In" button is enabled. Click this button. 
+</p>
+<img src="pic4.png" align=center>
+<p>
+If you have set passphrase for your account, prompt will appear. Enter the passphrase and click "OK".
+</p>
+<img src="pic5.png" align=center>
+<p>
+Now pica-client will try
+to make connections to known Pica Pica nodes and update list of active nodes, i.e nodes that are online, up and running. If some alive
+node is found and connection is successful, pica-client will change its state to "Connected" and sitting bird icon (it is a common
+magpie, Latin name <i>"Pica pica"</i>) in system tray area will be changed to the flying bird icon. Now it's time to add some people to
+your contact list.
+</p>
+<h3>Contacts.</h3>
+<p>
+Let's suppose that your friend Jane Doe has sent her Pica Pica ID to you. Right-click on the empty area of the main window (or select
+menu item "Contacts") and click "Add Contact...". Paste received ID and click "OK".
+</p>
+<img src="pic6.png" align=center>
+<p>
+Newly added ID will appear in the contacts list, but without nickname yet. Double-click on this ID (or right-click and select 
+"Start Chat"). Chat window will be opened. Say "hi" to Jane. If she is online at this moment, message will be delivered and "+"
+sign will appear to the left of the message. Also ID entry in the contacts list will be changed to nickname and ID in braces.
+Remember that date and time indicated in chat window is your local date and time when the message was received or sent by you,
+not the date and time when it was actually sent or received by your peer. Messages are sent by pressing "Enter", newline is added
+by combination "Shift"+"Enter". If your contact is not online, outgoing messages are stored in local history and marked as undelivered.
+Pica-client periodically tries to deliver them.
+</p>
+<img src="pic7.png" align=center>
+<p>
+Now let's suppose that your another friend John Smith has received your Pica Pica ID, created his account and wants to chat with you. You will
+see this question
+</p>
+<img src="pic8.png" align=center>
+<p>
+You can click "Yes" to add him, "No" to ignore him or "Add to blacklist" to ban him forever. Because he is a friend, probably you 
+want to select "Yes". Then his name will appear in your contact list.
+</p>
+<p>
+It is strongly recommended to always verify Pica Pica ID of your new contacts in order to prevent "man-in-the-middle" attack.
+Key exchange and identity verification is a fundamental problem of encrypted communications, so you have to take it seriously. 
+It's better to exchange Pica Pica IDs in person, but obviously that's not always possible. You can make phone calls
+to your contacts and ask them to read their Pica Pica ID and check that it matches ID in your contact list (right-click on contact
+and select "Show Pica Pica ID"), then read them your ID and make them verify it in their contact list. This procedure significantly
+reduces risk of silently replacing ID by some adversary. However, I don't think that government agencies are totally uncapable of
+imitating voice of selected person in real-time :)
+</p>
+<h3>Sending and receiving files.</h3>
+<p>
+You can exchange files using Pica Pica. Needless to say, file transfers are encrypted too. To send file, right-click on contact and 
+select "Send File". File selection dialog will ask you which file you want to send. 
+</p>
+<img src="pic9.png" align=center>
+<p>
+Then file transfer window will show up.
+</p>
+<img src="pic10.png" align=center>
+<p>
+Receiver of file has to click "Accept" in order to start tranfer.
+</p>
+<img src="pic11.png" align=center>
+<p>
+Then file transfer starts.
+</p>
+<img src="pic12.png" align=center>
+</body>
+</html>
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