I've made one map on Halo 5, I was thoroughly disappointed because 343 didn't release forge right away and then they lacked putting in infection and other forging items. Since then i've turned halo 5 back on and have seen that they've added some cool things that I can get back into again. I use to spend all my time making custom games in Halo 3, and Reach. I have experience forging. Now i just need to get focused and I believe I can do that with a partner(s). If you're down to bring me up to speed, and want to make finished products that are professional looking, send a friend request to GT: AnderBRO2
I would say head to Youtube. Lots of good tutorials on all the new elements added to forge. This would cover the absolute basics at first. Then id suggest hitting up people once you have more specific advice
I mean, I've got the basics covered, it's the direction and the companionship while I forge is what I want. Making a decent map will take minimum 12 hours now a days.
Id say it might be unrealistic for somebody to dedicate 12 hours to somebody new to the community and watch you forge. Try posting some of your previous work. Join lobbies/custom games and get to know people first. Make a couple of maps on your own first to show that you are worthy of said direction/help.
I could be wrong, but it sounds like he is interested in more of a collab. I would be interested in doing something with him. My GT is ExpiredEGGGNOG.