More orientation tweaks

docs/hello_nextflow/00_orientation.md

@@ -44,17 +44,10 @@ If you run this inside `hello-nextflow`, you should see the following output:
 7 directories, 9 files
 ```
 
-!!!note
-
-    Don't worry if this seems like a lot; we'll go through the relevant pieces at each step of the course.
-    This is just meant to give you an overview.
-
 **Here's a summary of what you should know to get started:**
 
 -   **The `.nf` files** are workflow scripts that are named based on what part of the course they're used in.
 
--   **The `hello-*` directories** are directories used in the later Parts of the course where we are working with more than just one workflow file.
-
 -   **The file `nextflow.config`** is a configuration file that sets minimal environment properties.
     You can ignore it for now.
 

docs/nf4_genomics/01_orientation.md

@@ -1,16 +1,16 @@
 # Orientation
 
-The Gitpod environment contains all the software, code and data necessary to work through this training course, so you don't need to install anything yourself.
+The training environment contains all the software, code and data necessary to work through this training course, so you don't need to install anything yourself.
 However, you do need a (free) account to log in, and you should take a few minutes to familiarize yourself with the interface.
 
 If you have not yet done so, please follow [this link](../../envsetup/) before going any further.
 
 ## Materials provided
 
-Throughout this training course, we'll be working in the `nf4-genomics/` directory.
+Throughout this training course, we'll be working in the `nf4-genomics/` directory, which you need to move into when you open the training workspace.
 This directory contains all the code files, test data and accessory files you will need.
 
-Feel free to explore the contents of this directory; the easiest way to do so is to use the file explorer on the left-hand side of the Gitpod workspace.
+Feel free to explore the contents of this directory; the easiest way to do so is to use the file explorer on the left-hand side of the training workspace.
 Alternatively, you can use the `tree` command.
 Throughout the course, we use the output of `tree` to represent directory structure and contents in a readable form, sometimes with minor modifications for clarity.
 
@@ -20,10 +20,12 @@ Here we generate a table of contents to the second level down:
 tree . -L 2
 ```
 
-If you run this inside `nf4-genomics`, you should see the following output: [TODO]
+If you run this inside `nf4-genomics`, you should see the following output:
 
 ```console title="Directory contents"
-.
+
+TODO
+
 ```
 
 !!!note
@@ -33,7 +35,17 @@ If you run this inside `nf4-genomics`, you should see the following output: [TOD
 
 **Here's a summary of what you should know to get started:**
 
-[TODO]
+-   **The `.nf` files** are workflow scripts that are named based on what part of the course they're used in.
+
+-   **The file `nextflow.config`** is a configuration file that sets minimal environment properties.
+    You can ignore it for now.
+
+-   TODO: input data description
+
+-   **The `solutions` directory** contains the completed workflow scripts that result from each step of the course.
+    They are intended to be used as a reference to check your work and troubleshoot any issues.
+    The name and number in the filename correspond to the step of the relevant part of the course.
+    For example, the file `TODO.nf` is the expected result of completing steps X through Y of Part 1: TODO.
 
 !!!tip