docs: Add an overview of the day to day dev workflow

This should help folks who aren't familiar with repo and git

Change-Id: Id5544a4345653702a683f6a59356c79eb11e0cac

GettingStarted.md

diff --git a/GettingStarted.md b/GettingStarted.md
index 9823992..60c08d1 100644
--- a/GettingStarted.md
+++ b/GettingStarted.md
@@ -41,10 +41,59 @@
 repo sync -j$(nproc)
 ```
 
+## Day-to-day Development Workflow
+
+In general, the way working with repo works is relatively simple:
+
+  1. Create a working topic branch to make changes on with `repo start
+     ${TOPICNAME}`
+  2. Make your changes to the files. Add them with `git add -A` and commit with
+     `git commit`.
+  3. Upload your changes with `repo upload -r ${REVIEWER} --cc ${CC_LIST}`
+  4. Go to the URL repo spits out to read and reply to comments.
+  5. Eventually your reviewer will give you a +2 LGTM on your change. To submit,
+     click the "SUBMIT" button on the change in the web interface.
+  6. Run `repo sync -j$(nproc)` to update.
+  7. Run `repo prune` to remove your topic branch.
+
+For more information on how to use repo and git effectively, take a look at the
+[official documentation](https://source.android.com/setup/create/coding-tasks).
+
+### How to sync my local copy with latest?
+
+```
+repo sync -j$(nproc)
+```
+
+Then if you have any outstanding branches, a `repo rebase` will help.
+
+### How to send code for review?
+
+To upload a branch to gerrit for review, do this:
+
+```
+repo upload -r ${REVIEWER} --cc ${CC_LIST}
+```
+
+Repo will then output a URL for you to visit that allows you to make comments
+and abandon and merge the changes into the repository. To make changes during
+the review process, make your changes to the files, then:
+
+```
+git add -A                                    # To add the files you've changed
+git commit --amend                            # To update the previous change
+repo upload -t -r ${REVIEWER} --cc ${CC_LIST} # To upload the change to Gerrit for review
+```
+
 ## Repository Layout
 
 Our layout is pretty simple:
 
+#### hw/
+
+Contains the all of the source code and RTL required to build the Shodan
+hardware, as well as simulate it in Verilator.
+
 #### build/
 
 Contains build scripts for the whole tree. This is effectively just an
@@ -64,6 +113,10 @@
 
 The repo manifest used to glue all the git repositories together.
 
+#### scripts/
+
+Contains utility scripts to help automate a few things.
+
 ## More Information
 
   - [Information on how to use repo](https://go/repo)