Make sure to allow NuGet Package Restore in VS (Tools > Options > Package Manager). The first buid of the project will take quite a while, be patient, it will finish at some point.
Upon build a web.config file will be copied into the `OurUmbraco.Site` project which you can use in the following step.
Restore the database to SQL Server 2012 (won't work on earlier version) and update the connection strings (`umbracoDbDSN`) in `OurUmbraco.Site/web.config`.
Currently, we have some invalid data in the database that prevents the upgrade installer to run when you start the site. This is fixable by running the following queries first:
```
alter table umbracoLanguage drop constraint PK_language;
alter table umbracoLanguage alter column id int not null;
alter table umbracoLanguage add CONSTRAINT PK_language PRIMARY KEY CLUSTERED (id);
CREATE UNIQUE NONCLUSTERED INDEX [IX_cmsDictionary_id] ON [dbo].[cmsDictionary]
([id] ASC) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY];
delete from umbracoNode where id = 147605
delete from umbracoNode where id = 147606
delete from umbracoNode where id = 148645
```
After doing that you should be able to start the site and run the upgrade with no problems.
To log in, try `root` / `Not_A_Real_Password` for the backoffice and `member423@non-existing-mail-provider.none` / `Not_A_Real_Password` for the frontend.
If the documentation area seems empty then that's because you need to download the documentation, look for the the `Github Documentation` tab in the dashboards in the Developer section of Umbraco and use the `Get Docs!!` button.
If you're creating a pull request, make sure that it's backed by an issue on the tracker: http://issues.umbraco.org/issues?q=project%3A+our.umbraco.org
Mention the issue number in your pull request so we can merge it in more easily.
Even if you're not planning on sending a pull request, you can always create an issue on the tracker if it doesn't exist yet, it helps other find ways to contribute.