We have just setup federation with 2 of our clients and it could not have been any easier.  We allowed the external communication and simply had the clients add: “sipfed.online.lync.com” for bajaconsulting.com to their trusted domains.  (see http://lyncdup.com/2011/04/how-to-enable-office365-lync-online-to-federate-with-lync-on-prem/ for a great walk through).​​

• While editing a page, choose Style Sheet on the Design Tab

• Select View Default CSS then copy it
• Paste into notepad (or whatever) and save as custom.css
• Upload to Style Library
• Open in SPD and make changes
• In the original view for the Style Sheet:
  • Check “Apply custom CSS”
  • Add “@import url("/Style%20Library/custom.css");”

• The OOB master page cannot be customized.  It throws the error “The base type 'Microsoft.SharePoint.Spx.WebsiteCore.RootMaster' is not allowed for this page. The type is not registered as safe” as soon as it is unghosted – no fix or work around yet
• Adding JQuery and extra JS libraries to page through the HTML widget doesn’t work – explanation and work around found.  Post coming but in the meantime check out the Blog menu item on www.bajaconsulting.com and the Specialties  area on the home page for some AJAX goodness
• Pulling list information from a SharePoint list (here’s a hint, the REST apis do not work anonymously) – Workaround found.  Post coming but the Specialties uses this too.
• All the HTML5 stuff.  The doctype for the page is not valid HTML5 the and therefore in IE9 and others do not render my animations.  Open the page in Firefox to see the difference.  No workaround or fix yet

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">

$(document).ready(function(){
//Hide the header row
$(".ms-listviewtable tbody tr:nth-child(1)").hide();

//Open links in new window​
$(".ms-listviewtable tbody a").click(function(){
this.target = "_blank";
});
});
</script>