These are notes from my first upgrade of SharePoint 2010 to SharePoint 2013. The purpose of the upgrade is to carry out an initial test upgrade to find any issues etc. I’m not replicating the environment in terms of server roles etc. everything is installed on one server with local SQL. I followed the steps outlined here: http://technet.microsoft.com/en-us/library/cc303436.aspx
Upgrade a site collection to SharePoint 2013
Once the databases have been upgraded you can upgrade individual site collections. You will see the notification bar at the top of the site with the option Start now or Remind me later.
Before beginning the site collection upgrade run health checks from Site Settings -> Site Collection Administration -> Site collection health checks.
On the run site collection health checks page, click Start checks.
After reviewing the health check results begin the site collection upgrade. From the Site Settings page, click Site collection upgrade beneath Site Collection Administration.
On the following page, click Upgrade this Site Collection.
Once the upgrade has completed verify the upgrade from the Upgrade status page. Go to Site Settings -> Site Collection Administration -> Site collection upgrade. On this page click Review Site Collection Upgrade Status.
Finally, review everything is working and looks as you’d expect.
Additional configuration tweaks
Grant the default content access account the “Retrieve People Data for Search Crawlers” permission for the User Profile Service application.
Configure the object cache user accounts http://technet.microsoft.com/en-us/library/ff758656.aspx
Enable the blob cache http://technet.microsoft.com/en-us/library/ee424404.aspx