If you aim for the Microsoft SharePoint 2010 certifications there are two certifications you can get. One is for administrators and one is for developers.
EXAMS YOU HAVE TO TAKE
For the Administrator Certification you need two exams:
Exam 70-667: TS: Microsoft SharePoint 2010, Configuring
Exam 70-668: PRO: Microsoft SharePoint 2010, Administrator
This two exams are going to give you the MCITP SharePoint Administrator 2010 certification.
For the Developer Certification you need two exams:
Exam 70-573: TS: Microsoft SharePoint 2010, Application Development
Exam 70-576: PRO: Designing and Developing Microsoft SharePoint 2010 Applications
This two exams are going to give you the MCPD SharePoint Developer 2010 certification.
Here is a certifications path from Microsoft SharePoint 2010 Certification Paths
HOW TO PREPARE
Online Training Resources i found very helpful
Get Started Developing on SharePoint 2010
SharePoint 2010 Developer Training Course
SharePoint 2010 Advanced IT Professional Training
I love the TechEd videos, they are full of helpful information, but not really related to the exams.
VIRTUALIZATION WITH HYPER-V
Virtual Image to learn SharePoint 2010
This download contains a two Windows Server 2008 R2 Hyper-V Virtual Machine set for evaluating and demonstrating Office 2010, SharePoint 2010 and Project Server 2010.
SharePoint 2010: Getting Started with Development on SharePoint 2010 Hands-on Labs
Use these 10 hands-on lab manuals for SharePoint 2010 to get started learning SharePoint 2010 development.
And Last but not least, visit the Official SharePoint 2010 Website from Microsoft.
Official SharePoint 2010 Website