70-321 has no prep materials from MeasureUp or SelfTest yet.
70-323 has an e-learning course listed, 10954AE, although there appears to be no way to access the materials. When I search on the Microsoft Online Training page I receive links back to the tests, not to any course, and the site appears broken (maybe I should try again later) because every time I try to search the course catalog I get an error page instead.
There are also no classroom or Microsoft Press books yet for either one. For future updates on prep materials see 70-321 Prep Materials and 70-323 Prep Materials. See my earlier article Office 365 Exams & Certifications in April! for more on the first two Office 365 exams, 70-321 and 70-323.
Small Business Competency
Microsoft did announce that 70-321 and 70-323 would count toward the Small Business Competency for Partners.
You can learn more about the requirements for Silver at Earn the Silver Small Business competency.
You can learn more about the upgrade to Gold at Earn the Gold Small Business competency.
Note that other competencies seem to require more MCPs to pass tests than does the Small Business Competency it seems. That makes sense I guess because many partner organizations that serve Small and Medium Businesses (SMBs) are themselves small.
How To Certify
Well, two of the tests are available but the study materials are scant. There are some third-party books available for Office 365 but if you search Amazon.com for either 70-321 or 70-323 you get a list of O-rings. The Amazon books I found on Office 365 are general books on the subject mostly and do not seem to prepare you specifically for an exam.
I guess if you’re comfortable with the component products and have studied the materials that are available on the Office 365 Wiki and the Office 365 Deployment Guide you should be able to take the tests with hands-on experience. I’ve heard some people say the tests were easy and some say they took multiple times to pass. I haven’t tried yet but am planning to soon. I’ll post an update when I do.