You can still do red and green days if it is easier for you.
I do think Extra Easy is quite simple to get your head around (but some terms have changed ie, no 'superfree' any more, most of the 'superfree' foods are still free but some are labelled as speed food [S] and some are high protein labelled [P])
I would recommend popping along to a group, you can buy all the cookbooks at retail value, and have a manual to the new plan, along with a full explanation - as well as access to syns online for the first two weeks. All very useful when starting again