Tutorial - minor tweaks

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Author: samaaron

etc/doc/tutorial/01-Welcome-to-Sonic-Pi.md

@@ -15,9 +15,9 @@ be interested in finding out more about my
 [Live Coding Performances](http://facebook.com/livecodersamaaron) where
 I code with Sonic Pi live in front of audiences.
 
-If you have any thoughts, or ideas for improving Sonic Pi - please
-pass them on - feedback is so helpful. You never know, your idea might
-be the next big feature!
+If you have any thoughts, or ideas for improving Sonic Pi - please pass
+them on - feedback is so helpful. You never know, your idea might be the
+next big feature!
 
 This tutorial is divided up into sections grouped by category. Whilst
 I've written it to have an easy learning progression from start to
@@ -27,7 +27,7 @@ consider it for a future version.
 
 Finally, watching others live code is a really great way to learn. I
 regularly stream live on
-[livecoding.tv/samaaron](http://livecoding.tv/samaaron) so please do
+[livecoding.tv/samaaron](http://youtube.com/samaaron) so please do
 drop by, say hi and ask me lots of questions :-)
 
 OK, let's get started...

etc/doc/tutorial/01.1-Live-Coding.md

@@ -51,7 +51,7 @@ end
 Now, play around. Change the rates - what happens when you use high
 values, or small values or negative values? See what happens when you
 change the `rate:` value for the `:ambi_choir` sample just slightly (say
-to 0.29). What happens if you choose a really small `sleep` value? See
+to `0.29`). What happens if you choose a really small `sleep` value? See
 if you can make it go so fast your computer will stop with an error
 because it can't keep up (if that happens, just choose a bigger `sleep`
 time and hit `Run` again).

etc/doc/tutorial/02-Synths.md

@@ -7,9 +7,9 @@ OK, enough of the intros - let's get into some sound.
 In this section we'll cover the basics of triggering and manipulating
 synths. Synth is short for synthesiser which is a fancy word for
 something which creates sounds. Typically synths are quite complicated
-to use - especially analog synths with many patch wires and
-modules. However, Sonic Pi gives you much of that power in a very simple
-and approachable manner. 
+to use - especially analog synths such as Eurorack modules connected
+together by a mess of wires. However, Sonic Pi gives you much of that
+power in a very simple and approachable manner.
 
 Don't be fooled by the immediate simplicity of Sonic Pi's interface. You
 can get very deep into very sophisticated sound manipulation if that's