I have put together a little VPNs cheatsheet, it has got IKEv1, IKEv2, EasyVPN, DMVPN, FlexVPN and GETVPN.
Each VPN can be created with just two routers, and the steps are shown, like this:
You can download the file by heading over to the forum post.
I will be doing another one with ASA-based VPNs (L2L, Remote access etc), and one for troubleshooting.