Now that I can log in to MilConnect, when will I be able to access my Army email? Who is the point of contact?

Once you get to your unit, you should get an assistant. His job is to take care of you physically, he carries a weapon, drive your jeep, etc. Also, get you up to speed on Army stuff and paperwork. Finally, help set up and take down from Chapel Services.

Regarding your question about how to access your .mil email, I presume that you want to access it when you are not drilling or in the office where you drill. If so, you will want to ask your command about accessing your .mil email through Outlook Web Access (OWA). It is CAC enabled and requires the email cert on your CAC so you'll need a card reader. See:
https://webmail.apps.mil/mail/
https://www.militarycac.com/owa.htm

CH (1LT) (Join to see), from your question and the timeframe on your commission (two weeks), I am making a SWAG that you haven't even drilled with your first unit. All this SHOULD be explained to you when you arrive and in-process. However, it's also something that often times falls though the cracks with the reserve component (or, more often, you get 'unofficial' directions of how one of your peers does it).

Rather than restating everything on the website, head to the Colorado National Guard's site* where they have a great briefing for NG Soldiers (just ignore the parts that are "Colorado" specific). This should get you down the route of setting up your profile and accessing your email.

Another great site is the directions from the Army Enterprise desk - https://www.dodreads.com/links/popular-army-web-links/army-email/

However, if you don't have a CAC reader at home, you're out of luck until you get one (go to Military CAC.com* for info) and/or you can get to your unit.
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* CONG https://co.ng.mil/Portals/25/Documents/VDI_Email_Self_Migration_Process.pdf
* Military CAC.com - Tips on getting aCAC Reader - https://militarycac.com/purchase.htm