How do I start the archive missions?

I have read about the archive missions but I do not know where to go to get them. I am level 7 and have completed mercury's missions and have started on the Zion critical missions. I used to play a long time ago but I have forgotten everything. LOL.

Any help would be appreciated. I have the Hardlines for Mara and Uriah and one I think in Achan.

Also the medallins and keys I get from mobs. I take it there is a collector out there that may want them?

There are regular collectors pretty much everywhere. They are the pink squares on your map. As for Archive missions you can get the Zion ones in Moriah east at the bookstore from the Archivist researcher and the collector to trade with is in Camon Heights central I believe. If you want to do the Merv missions the Archivist is at Appolyon Northwest and a Merv collector is right in the same area. The Machine is at Midian park east and the collector is near Mara Central.

Thank you very much!

For the medalions (gang tokens, whatever) there are collectors (usually around the gangs area) that will give you a useful piece of kit in exchange for a certain number of tokens.

The keys you mention, found on certain 'selected' high level gang members or gang bosses are to hack nodes in Westview, International & Downtown districts to keep the 255 agents 'away' - if required by your org affiliation.  

LeMage wrote:

The keys you mention, found on certain 'selected' high level gang members or gang bosses are to hack nodes in Westview, International & Downtown districts to keep the 255 agents 'away' - if required by your org affiliation.  

Access keys are required by all, regardless of org affiliation. Also if it's not access keys you've found but chopper keys (from the choppers you find in Uriah) then there are several collectors in Uriah who you can trade with. Look for the pink trade icons on your minimap (m).