If you are studying like me for the 70-664 & 70-665 Lync exams. The Lync Jump Start series are a good point for beginning 
- Deploying Lync Jump Start (01): Features and Architecture of Microsoft Lync Server 2010
- Deploying Lync Jump Start (02a): Deploying Microsoft Lync Server 2010 | Part 1
- Deploying Lync Jump Start (02b): Deploying Microsoft Lync Server 2010 | Part 2
- Deploying Lync Jump Start (03): Configuring Users and Rights for Microsoft Lync Server 2010
- Deploying Lync Jump Start (04a): External User Access Microsoft Lync Server 2010 | Part 1
- Deploying Lync Jump Start (04b): External User Access Microsoft Lync Server 2010 | Part 2
- Deploying Lync Jump Start (05a): Configuring Basic Enterprise Voice Functionality Microsoft Lync Server 2010 | Part 1
- Deploying Lync Jump Start (05b): Configuring Basic Enterprise Voice Functionality Microsoft Lync Server 2010 | Part 2
- Deploying Lync Jump Start (6a): Extending Enterprise Voice Functionality Microsoft Lync Server 2010 | Part 1
- Deploying Lync Jump Start (6b): Microsoft Exchange Server 2010 SP1/Unified Messaging Integration | Part 2
- Deploying Lync Jump Start (7a): Implementing Response Groups in Microsoft Lync Server 2010
- Deploying Lync Jump Start (7b): Real-world IVR Scenarios with Microsoft Lync Server 2010
- Deploying Lync Jump Start (8): Conferencing with Microsoft Lync Server 2010
- Deploying Lync Jump Start (9): Monitoring Microsoft Lync Server 2010
- Deploying Lync Jump Start (10): Compliance and Archiving with Microsoft Lync Server 2010
- Deploying Lync Jump Start (11): High Availability and Disaster Recovery in Microsoft Lync Server 2010
- Deploying Lync Jump Start (12): Call Admission Control with Microsoft Lync Server 2010
- Deploying Lync Jump Start (13): Deploying and Configuring Enhanced 9-1-1 with Microsoft Lync Server 2010